---
title: Select the response consistent with the established facts concerning… — Big snakes: pythons, boas and anaconda… · tree and pragmatics
description: Select the response consistent with the established facts concerning the method by which constrictors subdue their prey. Exam question 2 of lesson 321 «Big snakes: pythons, boas and anacondas, and how big they really get» of the biology course of Mova's primary school, with the dependency tree and p
---

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# Exam question 2 · Big snakes: pythons, boas and anacondas, and how big they…

<!-- .ven lang=en -->
Select the response consistent with the established facts concerning the method by which constrictors subdue their prey.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, established facts, constrictors · **What happens:** select, establish, concern, subdue · **To what, where:** response, method, prey

<!-- .vabout -->
This is exam question 2 of lesson 321 «Big snakes: pythons, boas and anacondas, and how big they really get» of the biology course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get/#e2).

## The question {#question}

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e2:1
# text = Select the response consistent with the established facts concerning the method by which constrictors subdue their prey.
1	Select	select	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	response	response	NOUN	NN	Number=Sing	1	obj	_	_
4	consistent	consistent	ADJ	JJ	Degree=Pos	1	xcomp	_	_
5	with	with	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	established	establish	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	amod	_	_
8	facts	fact	NOUN	NNS	Number=Plur	4	obl	_	_
9	concerning	concern	VERB	VBG	VerbForm=Ger	8	acl	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	method	method	NOUN	NN	Number=Sing	9	obj	_	_
12	by	by	ADP	IN	_	13	case	_	_
13	which	which	PRON	WDT	PronType=Rel	15	obl	_	_
14	constrictors	constrictor	NOUN	NNS	Number=Plur	15	nsubj	_	_
15	subdue	subdue	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	acl:relcl	_	_
16	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	17	nmod:poss	_	_
17	prey	prey	NOUN	NN	Number=Sing	15	obj	_	SpaceAfter=No
18	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **select** | imperative | you *not said here* | the response |  |  |  | consistent *property* | vn obtain-13.5.2 «NP V NP»: agent=Agent response=Theme |
| 2 | **establish** | participle |  |  |  |  |  |  | vn indicate-78-1-1 «NP V NP to be NP»: agent=Pivot |
| 3 | **concern** | gerund | the established facts *not said here* | the method |  |  |  |  | vn amuse-31.1 «NP V NP»: agent=Stimulus method=Experiencer |
| 4 | **subdue** | present | constrictors | constrictors's prey |  |  |  | by the method | vn subjugate-42.3 «NP V NP»: agent=Agent prey=Patient |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The coils crush every bone of the prey at the first contraction, death following from the fractures alone

<!-- fold The tree, 18 words -->
```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e2:o1:1
# text = The coils crush every bone of the prey at the first contraction, death following from the fractures alone
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coils	coil	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	crush	crush	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	every	every	DET	DT	PronType=Tot	5	det	_	_
5	bone	bone	NOUN	NN	Number=Sing	3	obj	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	prey	prey	NOUN	NN	Number=Sing	5	nmod	_	_
9	at	at	ADP	IN	_	12	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
11	first	first	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Ord	12	amod	_	_
12	contraction	contraction	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
13	,	,	PUNCT	,	_	14	punct	_	_
14	death	death	NOUN	NN	Number=Sing	12	conj	_	_
15	following	follow	VERB	VBG	Tense=Pres|VerbForm=Part	3	advcl	_	_
16	from	from	ADP	IN	_	18	case	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	fractures	fracture	NOUN	NNS	Number=Plur	15	obl	_	_
19	alone	alone	ADV	RB	_	15	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **crush** | present | the coils | every bone of the prey |  | the first contraction and death |  |  | vn carve-21.2-1 «NP V NP»: agent=Agent bone=Patient |
| 2 | **follow** | gerund | the coils *not said here* |  |  | the fractures |  | alone *property* | vn chase-51.6 «NP V NP PP.location»: agent=Agent from fracture=Trajectory |

### Option 2 {#o2}

<!-- .ven lang=en -->
The coils are employed solely for the transport of prey

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e2:o2:1
# text = The coils are employed solely for the transport of prey
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coils	coil	NOUN	NNS	Number=Plur	4	nsubj:pass	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	employed	employ	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	solely	solely	ADV	RB	_	4	advmod	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	transport	transport	NOUN	NN	Number=Sing	4	obl	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	prey	prey	NOUN	NN	Number=Sing	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **employ** | present · passive |  | the coils |  |  |  | for the transport of prey; solely *property* | vn use-105.1 «NP V NP PP.predicate»: subject=Theme for transport=Eventuality |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The coils tighten upon each exhalation and principally arrest the circulation of the blood

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e2:o3:1
# text = The coils tighten upon each exhalation and principally arrest the circulation of the blood
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coils	coil	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	tighten	tighten	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	upon	upon	ADP	IN	_	6	case	_	_
5	each	each	DET	DT	PronType=Tot	6	det	_	_
6	exhalation	exhalation	NOUN	NN	Number=Sing	3	obl	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	principally	principally	ADV	RB	_	9	advmod	_	_
9	arrest	arrest	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	circulation	circulation	NOUN	NN	Number=Sing	9	obj	_	_
12	of	of	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	blood	blood	NOUN	NN	Number=Sing	11	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **tighten** | present | the coils |  |  |  |  | upon each exhalation | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 2 | **arrest** | present | the coils *not said here* | the circulation of the blood |  |  |  | principally *property* | vn prosecute-33.2-1 «NP V NP»: agent=Agent circulation=Patient |
| 3 | **circulate** |  |  | the blood |  |  |  |  | nom circulation «communication transitive»: of=patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The coils deliver venom through the scales of the snake

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e2:o4:1
# text = The coils deliver venom through the scales of the snake
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coils	coil	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	deliver	deliver	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	venom	venom	NOUN	NN	Number=Sing	3	obj	_	_
5	through	through	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	scales	scale	NOUN	NNS	Number=Plur	3	obl	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	snake	snake	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **deliver** | present | the coils | venom |  | the scales of the snake |  |  | vn birth-28.2-1-1 «NP V NP»: agent=Agent venom=Patient |

<!-- div src -->

**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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- ← previous: [Big snakes: pythons, boas and anaconda…, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get/e1/)
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- ↑ back to [Big snakes: pythons, boas and anacondas, and how big they really get](https://md.mova.elamur.ai/free/en/corpora/questions/biology/321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get/)