---
title: A toucan is perched on a branch. How many of its toes point backwards? — The aviary: the walk-through tropical… · tree and pragmatics
description: A toucan is perched on a branch. How many of its toes point backwards? Test 2 of lesson 93 «The aviary: the walk-through tropical house» 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.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/93-the-aviary-the-walk-through-tropical-house/t2/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/questions/biology/) / [The aviary: the walk-through tropical…](https://md.mova.elamur.ai/free/en/corpora/questions/biology/93-the-aviary-the-walk-through-tropical-house/) / t2

# Test 2 · The aviary: the walk-through tropical house

<!-- .ven lang=en -->
A toucan is perched on a branch. How many of its toes point backwards?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 4 · wrong ✗ · **Who acts:** many · **What happens:** perch, point · **To what, where:** toucan, branch

<!-- .vabout -->
This is test 2 of lesson 93 «The aviary: the walk-through tropical house» 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/93-the-aviary-the-walk-through-tropical-house/#t2).

## The question {#question}

<!-- .note -->
*Sentence 1:* A toucan is perched on a branch.

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:1
# text = A toucan is perched on a branch.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	toucan	toucan	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	perched	perch	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	on	on	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	branch	branch	NOUN	NN	Number=Sing	4	obl	_	SpaceAfter=No
8	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **perch** | present · passive |  | a toucan |  | a branch |  |  | vn put\_spatial-9.2 «NP V NP PP.destination»: subject=Theme on branch=Destination |

<!-- .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:* How many of its toes point backwards?

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:2
# text = How many of its toes point backwards?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	many	many	ADJ	JJ	Degree=Pos	6	nsubj	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	toes	toe	NOUN	NNS	Number=Plur	2	nmod	_	_
6	point	point	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	backwards	backwards	ADV	RB	_	6	advmod	_	SpaceAfter=No
8	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **point** | present | many of branch's toes |  |  |  |  | backwards *property* | vn wink-40.3.1 «NP V»: agent=Agent |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
One on each foot

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:o1:1
# text = One on each foot
1	One	one	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
2	on	on	ADP	IN	_	4	case	_	_
3	each	each	DET	DT	PronType=Tot	4	det	_	_
4	foot	foot	NOUN	NN	Number=Sing	1	nmod	_	_
```

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

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
Three on each foot

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:o2:1
# text = Three on each foot
1	Three	three	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
2	on	on	ADP	IN	_	4	case	_	_
3	each	each	DET	DT	PronType=Tot	4	det	_	_
4	foot	foot	NOUN	NN	Number=Sing	1	nmod	_	_
```

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

### Option 3 {#o3}

<!-- .ven lang=en -->
None at all

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:o3:1
# text = None at all
1	None	none	PRON	NN	PronType=Neg	0	root	_	_
2	at	at	ADP	IN	_	3	case	_	_
3	all	all	DET	DT	PronType=Tot	1	nmod	_	_
```

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

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

<!-- .ven lang=en -->
Two on each foot

```conllu
# sent_id = question:biology:93-the-aviary-the-walk-through-tropical-house:t2:o4:1
# text = Two on each foot
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
2	on	on	ADP	IN	_	4	case	_	_
3	each	each	DET	DT	PronType=Tot	4	det	_	_
4	foot	foot	NOUN	NN	Number=Sing	1	nmod	_	_
```

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

<!-- 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 -->

<!-- pn -->
- ← previous: [The aviary: the walk-through tropical…, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/93-the-aviary-the-walk-through-tropical-house/t1/)
- next →: [The aviary: the walk-through tropical…, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/93-the-aviary-the-walk-through-tropical-house/t3/)
- ↑ back to [The aviary: the walk-through tropical house](https://md.mova.elamur.ai/free/en/corpora/questions/biology/93-the-aviary-the-walk-through-tropical-house/)

