---
title: Which of the following statements most accurately characterises the… — Big snakes: pythons, boas and anaconda… · tree and pragmatics
description: Which of the following statements most accurately characterises the small spurs found near the tail of boas and pythons? Exam question 3 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 3 · Big snakes: pythons, boas and anacondas, and how big they…

<!-- .ven lang=en -->
Which of the following statements most accurately characterises the small spurs found near the tail of boas and pythons?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** follow, characteris, find · **To what, where:** small spurs, tail

<!-- .vabout -->
This is exam question 3 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/#e3).

## The question {#question}

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e3:1
# text = Which of the following statements most accurately characterises the small spurs found near the tail of boas and pythons?
1	Which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
2	of	of	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	statements	statement	NOUN	NNS	Number=Plur	8	obl	_	_
6	most	most	ADV	RBS	Degree=Sup	7	advmod	_	_
7	accurately	accurately	ADV	RB	_	8	advmod	_	_
8	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	small	small	ADJ	JJ	Degree=Pos	11	amod	_	_
11	spurs	spur	NOUN	NNS	Number=Plur	8	obj	_	_
12	found	find	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	acl	_	_
13	near	near	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	tail	tail	NOUN	NN	Number=Sing	12	obl	_	_
16	of	of	ADP	IN	_	17	case	_	_
17	boas	boa	NOUN	NNS	Number=Plur	15	nmod	_	_
18	and	and	CCONJ	CC	_	19	cc	_	_
19	pythons	python	NOUN	NNS	Number=Plur	17	conj	_	SpaceAfter=No
20	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | the small spurs |  |  |  | of the following statements; accurately *property* | tree rules |
| 3 | **find** | participle |  | the small spurs *not said here* |  | the tail of boas and pythons |  |  | vn declare-29.4-1-1 «NP V what S\_INF»: agent=Agent |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
They are vestiges of the hind limbs of the limbed lizards from which snakes evolved

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e3:o1:1
# text = They are vestiges of the hind limbs of the limbed lizards from which snakes evolved
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	vestiges	vestige	NOUN	NNS	Number=Plur	15	nsubj	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	hind	hind	ADJ	JJ	Degree=Pos	7	amod	_	_
7	limbs	limb	NOUN	NNS	Number=Plur	3	nmod	_	_
8	of	of	ADP	IN	_	11	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	limbed	limb	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	amod	_	_
11	lizards	lizard	NOUN	NNS	Number=Plur	7	nmod	_	_
12	from	from	ADP	IN	_	13	case	_	_
13	which	which	DET	WDT	PronType=Int	14	det	_	_
14	snakes	snake	NOUN	NNS	Number=Plur	11	conj	_	_
15	evolved	evolve	VERB	VBD	Mood=Ind|Tense=Past|VerbForm=Fin	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | vestiges |  |  |  | of the hind limbs of the limbed lizards and which snakes | tree rules |
| 2 | **limb** | participle |  |  |  |  |  |  | tree rules |
| 3 | **evolve** | past | vestiges |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
They are newly evolving legs that will lengthen gradually in the course of future generations

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e3:o2:1
# text = They are newly evolving legs that will lengthen gradually in the course of future generations
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	5	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	newly	newly	ADV	RB	_	5	advmod	_	_
4	evolving	evolve	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	legs	leg	NOUN	NNS	Number=Plur	0	root	_	_
6	that	that	PRON	WDT	PronType=Rel	8	nsubj	_	_
7	will	will	AUX	MD	VerbForm=Fin	8	aux	_	_
8	lengthen	lengthen	VERB	VB	VerbForm=Inf	5	acl:relcl	_	_
9	gradually	gradually	ADV	RB	_	8	advmod	_	_
10	in	in	ADP	IN	_	12	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	course	course	NOUN	NN	Number=Sing	8	obl	_	_
13	of	of	ADP	IN	_	15	case	_	_
14	future	future	ADJ	JJ	Degree=Pos	15	amod	_	_
15	generations	generation	NOUN	NNS	Number=Plur	12	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **evolve** | gerund |  |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 2 | **is a** | present | They | evolving legs |  |  |  | newly *property* | tree rules |
| 3 | **lengthen** | future | evolving legs |  |  | the course of future generations |  | gradually *property* | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
They are organs for the delivery of venom

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e3:o3:1
# text = They are organs for the delivery of venom
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	organs	organ	NOUN	NNS	Number=Plur	0	root	_	_
4	for	for	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	delivery	delivery	NOUN	NN	Number=Sing	3	nmod	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	venom	venom	NOUN	NN	Number=Sing	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | organs |  |  |  | for the delivery of venom | tree rules |
| 2 | **deliver** |  |  | venom |  |  |  |  | nom delivery «act transitive»: of=patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
They are teeth that have migrated along the body

```conllu
# sent_id = question:biology:321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get:e3:o4:1
# text = They are teeth that have migrated along the body
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	teeth	tooth	NOUN	NNS	Number=Plur	0	root	_	_
4	that	that	PRON	WDT	PronType=Rel	6	nsubj:pass	_	_
5	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	aux	_	_
6	migrated	migrate	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	acl:relcl	_	_
7	along	along	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	body	body	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | They | teeth |  |  |  |  | tree rules |
| 2 | **migrate** | present · perfect · passive |  | teeth |  |  |  | along the body | tree rules |

<!-- 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 2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get/e2/)
- next →: [Big snakes: pythons, boas and anaconda…, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/biology/321-big-snakes-pythons-boas-and-anacondas-and-how-big-they-really-get/e4/)
- ↑ 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/)