---
title: Darwin's bark spider spins a web across a river. About how wide can… — Spider-Man: real spider silk and webs · tree and pragmatics
description: Darwin's bark spider spins a web across a river. About how wide can it be? Test 9 of lesson 147 «Spider-Man: real spider silk and webs» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 9 · Spider-Man: real spider silk and webs

<!-- .ven lang=en -->
Darwin's bark spider spins a web across a river. About how wide can it be?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** bark spider, spider · **What happens:** spin, be · **To what, where:** web, river

<!-- .vabout -->
This is test 9 of lesson 147 «Spider-Man: real spider silk and webs» of the biology course of Mova's primary school. 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/147-spider-man-real-spider-silk-and-webs/#t9).

## The question {#question}

<!-- .note -->
*Sentence 1:* Darwin's bark spider spins a web across a river.

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:1
# text = Darwin's bark spider spins a web across a river.
1	Darwin	Darwin	PROPN	NNP	Number=Sing	4	nmod:poss	_	SpaceAfter=No
2	's	's	PART	POS	_	1	case	_	_
3	bark	bark	NOUN	NN	Number=Sing	4	compound	_	_
4	spider	spider	NOUN	NN	Number=Sing	5	nsubj	_	_
5	spins	spin	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	web	web	NOUN	NN	Number=Sing	5	obj	_	_
8	across	across	ADP	IN	_	10	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	river	river	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
11	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **spin** | present | Darwin's bark spider | a web |  | a river |  |  | vn roll-51.3.1 «NP V NP PP.trajectory»: agent=Agent web=Theme across river=Trajectory |

<!-- .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.

<!-- .note -->
*Sentence 2:* About how wide can it be?

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:2
# text = About how wide can it be?
1	About	about	ADP	IN	_	3	case	_	_
2	how	how	ADV	WRB	PronType=Int	3	advmod	_	_
3	wide	wide	ADJ	JJ	Degree=Pos	0	root	_	_
4	can	can	AUX	MD	VerbForm=Fin	6	aux	_	_
5	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	nsubj	_	_
6	be	be	VERB	VB	VerbForm=Inf	3	ccomp	_	SpaceAfter=No
7	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **can** | can | spider |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Exactly 1 metre

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:o1:1
# text = Exactly 1 metre
1	Exactly	exactly	ADV	RB	_	3	advmod	_	_
2	1	1	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	metre	metre	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
About 2 kilometres

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:o2:1
# text = About 2 kilometres
1	About	about	ADV	RB	_	2	advmod	_	_
2	2	2	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
About 25 centimetres

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:o3:1
# text = About 25 centimetres
1	About	about	ADV	RB	_	2	advmod	_	_
2	25	25	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	centimetres	centimetre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Up to about 25 metres

```conllu
# sent_id = question:biology:147-spider-man-real-spider-silk-and-webs:t9:o4:1
# text = Up to about 25 metres
1	Up	up	ADV	RB	_	5	advmod	_	_
2	to	to	ADP	IN	_	5	case	_	_
3	about	about	ADV	RB	_	4	advmod	_	_
4	25	25	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	metres	metre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**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.

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