---
title: Why might a large electric eel be dangerous to a person wading in a… — Electricity and safety · tree and pragmatics
description: Why might a large electric eel be dangerous to a person wading in a river? Test 10 · ★ of lesson 28 «Electricity and safety» 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 right.
---

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# Test 10 · ★ · Electricity and safety

<!-- .ven lang=en -->
Why might a large electric eel be dangerous to a person wading in a river?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** large electric eel, person · **What happens:** be, wade · **To what, where:** river

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This is test 10 · ★ of lesson 28 «Electricity and safety» 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/28-electricity-and-safety/#t10).

## The question {#question}

```conllu
# sent_id = question:physics:28-electricity-and-safety:t10:1
# text = Why might a large electric eel be dangerous to a person wading in a river?
1	Why	why	ADV	WRB	PronType=Int	8	advmod	_	_
2	might	might	AUX	MD	VerbForm=Fin	8	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
4	large	large	ADJ	JJ	Degree=Pos	6	amod	_	_
5	electric	electric	ADJ	JJ	Degree=Pos	6	amod	_	_
6	eel	eel	NOUN	NN	Number=Sing	8	nsubj	_	_
7	be	be	AUX	VB	VerbForm=Inf	8	cop	_	_
8	dangerous	dangerous	ADJ	JJ	Degree=Pos	0	root	_	_
9	to	to	ADP	IN	_	11	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
11	person	person	NOUN	NN	Number=Sing	8	obl	_	_
12	wading	wade	VERB	VBG	VerbForm=Ger	11	acl	_	_
13	in	in	ADP	IN	_	15	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	river	river	NOUN	NN	Number=Sing	12	obl	_	SpaceAfter=No
16	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | might | a large electric eel |  |  |  |  | to a person; dangerous *property* | tree rules |
| 2 | **wade** | gerund | a person *not said here* |  |  | a river |  |  | vn run-51.3.2-1 «NP V PP.location»: agent=Theme in 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.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
It makes the water boil around you

```conllu
# sent_id = question:physics:28-electricity-and-safety:t10:o1:1
# text = It makes the water boil around you
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	water	water	NOUN	NN	Number=Sing	5	compound	_	_
5	boil	boil	NOUN	NN	Number=Sing	2	obj	_	_
6	around	around	ADP	IN	_	7	case	_	_
7	you	you	PRON	PRP	Case=Acc|Person=2|PronType=Prs	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | It | the water boil |  |  |  | around you | vn build-26.1-1 «NP.material V NP»: agent=Material boil=Product |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Its shock can be strong enough to knock a person over

```conllu
# sent_id = question:physics:28-electricity-and-safety:t10:o2:1
# text = Its shock can be strong enough to knock a person over
1	Its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	shock	shock	NOUN	NN	Number=Sing	5	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	5	aux	_	_
4	be	be	AUX	VB	VerbForm=Inf	5	cop	_	_
5	strong	strong	ADJ	JJ	Degree=Pos	0	root	_	_
6	enough	enough	ADV	RB	_	5	advmod	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	knock	knock	VERB	VB	VerbForm=Inf	5	advcl	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	person	person	NOUN	NN	Number=Sing	8	obj	_	_
11	over	over	ADV	RB	_	8	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | can | Its shock |  |  |  |  | enough, strong *property* | tree rules |
| 2 | **knock over** | to-infinitive | Its shock *not said here* | a person |  |  |  |  | vn split-23.2 «NP V NP apart»: agent=Agent person=Patient |
| 3 | **shock** |  | Its *= it* |  |  |  |  |  | nom shock «feeling transitive»: poss=agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
It bites with electric teeth

```conllu
# sent_id = question:physics:28-electricity-and-safety:t10:o3:1
# text = It bites with electric teeth
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	bites	bite	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	with	with	ADP	IN	_	5	case	_	_
4	electric	electric	ADJ	JJ	Degree=Pos	5	amod	_	_
5	teeth	tooth	NOUN	NNS	Number=Plur	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bite** | present | It |  |  |  |  | with electric teeth | vn swat-18.2 «NP V PP PP»: agent=Agent with tooth=Instrument |

### Option 4 {#o4}

<!-- .ven lang=en -->
It sucks the electricity right out of the person's body

```conllu
# sent_id = question:physics:28-electricity-and-safety:t10:o4:1
# text = It sucks the electricity right out of the person's body
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	sucks	suck	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	electricity	electricity	NOUN	NN	Number=Sing	2	obj	_	_
5	right	right	ADV	RB	_	2	advmod	_	_
6	out	out	ADP	IN	_	11	case	_	_
7	of	of	ADP	IN	_	11	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	person	person	NOUN	NN	Number=Sing	11	nmod:poss	_	SpaceAfter=No
10	's	's	PART	POS	_	9	case	_	_
11	body	body	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **suck** | present | It | the electricity |  | the person's body |  | right *property* | vn wipe\_manner-10.4.1-1 «NP V NP PP.source»: agent=Agent electricity=Theme out body=Source |

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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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- next →: [Electricity and safety, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/physics/28-electricity-and-safety/t11/)
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