---
title: Which is true about birds on power lines? — Electricity dangers: sockets, water, c… · tree and pragmatics
description: Which is true about birds on power lines? Test 8 · ★★ of lesson 16 «Electricity dangers: sockets, water, chargers and batteries» of the technology 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 8 · ★★ · Electricity dangers: sockets, water, chargers and batteries

<!-- .ven lang=en -->
Which is true about birds on power lines?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **What happens:** be

<!-- .vabout -->
This is test 8 · ★★ of lesson 16 «Electricity dangers: sockets, water, chargers and batteries» of the technology 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/technology/16-electricity-dangers/#t8).

## The question {#question}

```conllu
# sent_id = question:technology:16-electricity-dangers:t8:1
# text = Which is true about birds on power lines?
1	Which	which	PRON	WDT	PronType=Rel	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	_
4	about	about	ADP	IN	_	5	case	_	_
5	birds	bird	NOUN	NNS	Number=Plur	3	obl	_	_
6	on	on	ADP	IN	_	8	case	_	_
7	power	power	NOUN	NN	Number=Sing	8	compound	_	_
8	lines	line	NOUN	NNS	Number=Plur	5	nmod	_	SpaceAfter=No
9	?	?	PUNCT	.	_	3	punct	_	_
```

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

<!-- .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 -->
The birds have special rubber feet

```conllu
# sent_id = question:technology:16-electricity-dangers:t8:o1:1
# text = The birds have special rubber feet
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	birds	bird	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	special	special	ADJ	JJ	Degree=Pos	6	amod	_	_
5	rubber	rubber	NOUN	NN	Number=Sing	6	compound	_	_
6	feet	foot	NOUN	NNS	Number=Plur	3	obj	_	_
```

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

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

<!-- .ven lang=en -->
They are safe because they touch only one wire and not the ground

```conllu
# sent_id = question:technology:16-electricity-dangers:t8:o2:1
# text = They are safe because they touch only one wire and not the ground
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	safe	safe	ADJ	JJ	Degree=Pos	0	root	_	_
4	because	because	SCONJ	IN	_	6	mark	_	_
5	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	6	nsubj	_	_
6	touch	touch	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
7	only	only	ADV	RB	_	8	advmod	_	_
8	one	one	NUM	CD	NumForm=Word|NumType=Card	9	nummod	_	_
9	wire	wire	NOUN	NN	Number=Sing	6	obj	_	_
10	and	and	CCONJ	CC	_	13	cc	_	_
11	not	not	PART	RB	Polarity=Neg	13	advmod	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	ground	ground	NOUN	NN	Number=Sing	9	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | They |  |  |  |  | safe *property* | tree rules |
| 2 | **touch** | present | they | one wire and the ground |  |  |  |  | vn contiguous\_location-47.8-1 «NP V NP»: agent=Theme wire=Co-Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Power lines carry no electricity at all

```conllu
# sent_id = question:technology:16-electricity-dangers:t8:o3:1
# text = Power lines carry no electricity at all
1	Power	power	NOUN	NN	Number=Sing	2	compound	_	_
2	lines	line	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	carry	carry	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	no	no	DET	DT	PronType=Neg	5	det	_	_
5	electricity	electricity	NOUN	NN	Number=Sing	3	obj	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	all	all	DET	DT	PronType=Tot	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **carry** | present | Power lines | no electricity |  | all |  |  | vn carry-11.4 «NP V NP»: agent=Agent electricity=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
Electricity cannot travel through animals

```conllu
# sent_id = question:technology:16-electricity-dangers:t8:o4:1
# text = Electricity cannot travel through animals
1	Electricity	electricity	NOUN	NN	Number=Sing	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	travel	travel	VERB	VB	VerbForm=Inf	0	root	_	_
5	through	through	ADP	IN	_	6	case	_	_
6	animals	animal	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **travel** | can | Electricity |  |  |  |  | through animals | vn run-51.3.2-1 «NP V PP.location»: agent=Theme through animal=Trajectory |

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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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