---
title: Mrs Patel says "Bats are blind, that's why they use echolocation." W… — When the teacher gets it wrong · tree and pragmatics
description: Mrs Patel says "Bats are blind, that's why they use echolocation." What's true? Test 10 · ★★ of lesson 33 «When the teacher gets it wrong» of the myths course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 10 · ★★ · When the teacher gets it wrong

<!-- .ven lang=en -->
Mrs Patel says "Bats are blind, that's why they use echolocation." What's true?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** Mrs, Bats, that · **What happens:** say, be, use · **To what, where:** echolocation · **Speech:** someone speaks here

<!-- .vabout -->
This is test 10 · ★★ of lesson 33 «When the teacher gets it wrong» of the myths 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/myths/33-when-the-teacher-gets-it-wrong/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* Mrs Patel says "Bats are blind, that's why they use echolocation."

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:1
# text = Mrs Patel says "Bats are blind, that's why they use echolocation."
1	Mrs	Mrs	PROPN	NNP	Number=Sing	3	nsubj	_	_
2	Patel	Patel	PROPN	NNP	Number=Sing	1	flat	_	_
3	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	"	"	PUNCT	``	_	7	punct	_	SpaceAfter=No
5	Bats	bat	NOUN	NNS	Number=Plur	7	nsubj	_	_
6	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
7	blind	blind	ADJ	JJ	Degree=Pos	3	ccomp	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	that	that	PRON	DT	Number=Sing|PronType=Dem	11	nsubj	_	SpaceAfter=No
10	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	cop	_	_
11	why	why	ADV	WRB	PronType=Int	7	parataxis	_	_
12	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	13	nsubj	_	_
13	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	advcl:relcl	_	_
14	echolocation	echolocation	NOUN	NN	Number=Sing	13	obj	_	SpaceAfter=No
15	.	.	PUNCT	.	_	7	punct	_	SpaceAfter=No
16	"	"	PUNCT	''	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Mrs |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent |
| 2 | **is** *in a quote* | present | Bats |  |  |  |  | blind *property* | tree rules |
| 3 | **is** *in a quote* | present | that |  |  |  |  | why *property* | tree rules |
| 4 | **use** *in a quote* | present | Bats *= bat* | echolocation |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent echolocation=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.

<!-- .note -->
*Sentence 2:* What's true?

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:2
# text = What's true?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | true *property* | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Bats can see; echolocation adds to sight

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:o1:1
# text = Bats can see; echolocation adds to sight
1	Bats	bat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	_	_
3	see	see	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
4	;	;	PUNCT	,	_	6	punct	_	_
5	echolocation	echolocation	NOUN	NN	Number=Sing	6	nsubj	_	_
6	adds	add	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	sight	sight	NOUN	NN	Number=Sing	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | can | Bats |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 2 | **add** *speech: assert* | present | echolocation | sight |  |  |  |  | vn mix-22.1-2 «NP V NP»: agent=Agent sight=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Echolocation is just a word for 'blind seeing'

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:o2:1
# text = Echolocation is just a word for 'blind seeing'
1	Echolocation	echolocation	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	just	just	ADV	RB	_	5	advmod	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	word	word	NOUN	NN	Number=Sing	0	root	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	'	'	PUNCT	``	_	8	punct	_	SpaceAfter=No
8	blind	blind	ADJ	JJ	Degree=Pos	9	obl	_	_
9	seeing	see	VERB	VBG	VerbForm=Ger	5	acl	_	SpaceAfter=No
10	'	'	PUNCT	''	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Echolocation | a word |  |  |  |  | tree rules |
| 2 | **see** | gerund | a word *not said here* |  |  |  |  | for blind | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |

### Option 3 {#o3}

<!-- .ven lang=en -->
Bats are completely blind, and deaf as well

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:o3:1
# text = Bats are completely blind, and deaf as well
1	Bats	bat	NOUN	NNS	Number=Plur	4	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	completely	completely	ADV	RB	_	4	advmod	_	_
4	blind	blind	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
5	,	,	PUNCT	,	_	7	punct	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	deaf	deaf	ADJ	JJ	Degree=Pos	4	conj	_	_
8	as	as	ADV	RB	ExtPos=ADV	7	advmod	_	_
9	well	well	ADV	RB	Degree=Pos	8	fixed	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Bats |  |  |  |  | blind, completely *property* | tree rules |
| 2 | **be** |  | Bats *not said here* |  |  |  |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Bats only use their eyes, never any echoes

```conllu
# sent_id = question:myths:33-when-the-teacher-gets-it-wrong:t10:o4:1
# text = Bats only use their eyes, never any echoes
1	Bats	bat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	eyes	eye	NOUN	NNS	Number=Plur	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	9	punct	_	_
7	never	never	ADV	RB	PronType=Neg	9	advmod	_	_
8	any	any	DET	DT	PronType=Ind	9	det	_	_
9	echoes	echo	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **use** | present | Bats | Bats's eyes |  |  |  | any echoes *obl* | vn eat-39.1 «NP V NP»: agent=Agent eye=Patient |

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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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