---
title: Why does a heron stab a little beside where the fish appears to be? — Mirrors, rainbows and the blue sky · tree and pragmatics
description: Why does a heron stab a little beside where the fish appears to be? Test 5 · ★ of lesson 21 «Mirrors, rainbows and the blue sky» of the physics 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 5 · ★ · Mirrors, rainbows and the blue sky

<!-- .ven lang=en -->
Why does a heron stab a little beside where the fish appears to be?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 1 · wrong ✗ · **Who acts:** heron, fish · **What happens:** stab, appear, be · **To what, where:** little

<!-- .vabout -->
This is test 5 · ★ of lesson 21 «Mirrors, rainbows and the blue sky» of the physics 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/physics/21-mirrors-rainbows-and-the-blue-sky/#t5).

## The question {#question}

```conllu
# sent_id = question:physics:21-mirrors-rainbows-and-the-blue-sky:t5:1
# text = Why does a heron stab a little beside where the fish appears to be?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	heron	heron	NOUN	NN	Number=Sing	5	nsubj	_	_
5	stab	stab	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	little	little	ADJ	JJ	Degree=Pos	5	obl:unmarked	_	_
8	beside	beside	ADP	IN	_	12	mark	_	_
9	where	where	ADV	WRB	PronType=Rel	12	advmod	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	fish	fish	NOUN	NN	Number=Sing	12	nsubj	_	_
12	appears	appear	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
13	to	to	PART	TO	_	14	mark	_	_
14	be	be	VERB	VB	VerbForm=Inf	12	xcomp	_	SpaceAfter=No
15	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stab** | present · do-support | a heron | a little |  |  |  |  | vn poison-42.2 «NP V NP»: agent=Agent |
| 2 | **appear** | present | the fish |  |  |  |  |  | vn seem-109-1-1-1 «NP V S\_INF»: agent=Theme clause=Attribute |
| 3 | **be** | to-infinitive | the fish *not said here* |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Light bending at the surface makes the fish look shifted

```conllu
# sent_id = question:physics:21-mirrors-rainbows-and-the-blue-sky:t5:o1:1
# text = Light bending at the surface makes the fish look shifted
1	Light	light	NOUN	NN	Number=Sing	6	nsubj	_	_
2	bending	bend	VERB	VBG	VerbForm=Ger	1	acl	_	_
3	at	at	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	surface	surface	NOUN	NN	Number=Sing	2	obl	_	_
6	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	fish	fish	NOUN	NNS	Number=Plur	9	nsubj	_	_
9	look	look	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	ccomp	_	_
10	shifted	shift	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bend** | gerund | Light *not said here* |  |  | the surface |  |  | vn assuming\_position-50 «NP V PP.location»: agent=Agent at surface=Location |
| 2 | **make** | present | Light |  |  |  |  |  | tree rules |
| 3 | **look** | present | the fish |  |  |  |  |  | tree rules |
| 4 | **shift** | participle | the fish *not said here* |  |  |  |  |  | vn caused\_calibratable\_cos-45.6.2-1 «NP V ADV-Middle»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Herons have bad eyesight

```conllu
# sent_id = question:physics:21-mirrors-rainbows-and-the-blue-sky:t5:o2:1
# text = Herons have bad eyesight
1	Herons	heron	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	bad	bad	ADJ	JJ	Degree=Pos	4	amod	_	_
4	eyesight	eyesight	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Herons | bad eyesight |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent eyesight=Patient |

### Option 3 · ← Mova's choice {#o3}

<!-- .ven lang=en -->
Fish swim backwards to trick herons

```conllu
# sent_id = question:physics:21-mirrors-rainbows-and-the-blue-sky:t5:o3:1
# text = Fish swim backwards to trick herons
1	Fish	fish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	swim	swim	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	backwards	backwards	ADV	RB	_	2	advmod	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	trick	trick	VERB	VB	VerbForm=Inf	2	advcl	_	_
6	herons	heron	NOUN	NNS	Number=Plur	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **swim** | present | Fish |  |  |  |  | backwards *property* | vn run-51.3.2-1 «NP V»: agent=Theme |
| 2 | **trick** | to-infinitive | Fish *not said here* | herons |  |  |  |  | vn trick-59.2 «NP V NP»: agent=Agent heron=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The heron's beak is bent

```conllu
# sent_id = question:physics:21-mirrors-rainbows-and-the-blue-sky:t5:o4:1
# text = The heron's beak is bent
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	heron	heron	NOUN	NN	Number=Sing	4	nmod:poss	_	SpaceAfter=No
3	's	's	PART	POS	_	2	case	_	_
4	beak	beak	NOUN	NN	Number=Sing	6	nsubj:pass	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	aux:pass	_	_
6	bent	bend	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bend** | present · passive |  | the heron's beak |  |  |  |  | vn knead-26.5 «NP V NP.material»: subject=Material |

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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.

<!-- /div -->

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