---
title: Ellie says helium balloons go down because the helium "gets tired".… — Gases all around: breath and balloons · tree and pragmatics
description: Ellie says helium balloons go down because the helium "gets tired". What's true? Test 2 · ★ of lesson 20 «Gases all around: breath and balloons» of the chemistry 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 2 · ★ · Gases all around: breath and balloons

<!-- .ven lang=en -->
Ellie says helium balloons go down because the helium "gets tired". What's true?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** Ellie, helium balloons, helium · **What happens:** say, go down, get, be · **Speech:** someone speaks here

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This is test 2 · ★ of lesson 20 «Gases all around: breath and balloons» of the chemistry 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/chemistry/20-gases-all-around-breath-and-balloons/#t2).

## The question {#question}

<!-- .note -->
*Sentence 1:* Ellie says helium balloons go down because the helium "gets tired".

```conllu
# sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:t2:1
# text = Ellie says helium balloons go down because the helium "gets tired".
1	Ellie	Ellie	PROPN	NNP	Number=Sing	2	nsubj	_	_
2	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	helium	helium	NOUN	NN	Number=Sing	4	compound	_	_
4	balloons	balloon	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	go	go	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
6	down	down	ADV	RB	_	5	advmod	_	_
7	because	because	SCONJ	IN	_	11	mark	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	helium	helium	NOUN	NN	Number=Sing	11	nsubj	_	_
10	"	"	PUNCT	''	_	9	punct	_	SpaceAfter=No
11	gets	get	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	_
12	tired	tired	ADJ	JJ	Degree=Pos	11	xcomp	_	SpaceAfter=No
13	"	"	PUNCT	''	_	12	punct	_	SpaceAfter=No
14	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | present | Ellie |  |  |  |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **go down** | present | helium balloons |  |  |  |  | down *property* | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute |
| 3 | **get** *in a quote* | present | the helium |  |  |  |  | tired *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

<!-- .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:chemistry:20-gases-all-around-breath-and-balloons:t2:2
# 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 {#o1}

<!-- .ven lang=en -->
The balloon fills up with water

```conllu
# sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:t2:o1:1
# text = The balloon fills up with water
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	balloon	balloon	NOUN	NN	Number=Sing	3	nsubj	_	_
3	fills	fill	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	up	up	ADP	RP	_	3	compound:prt	_	_
5	with	with	ADP	IN	_	6	case	_	_
6	water	water	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fill up** | present | the balloon |  |  |  |  | with water | vn other\_cos-45.4 «NP V NP PP.instrument»: agent=Agent with water=Instrument |

### Option 2 {#o2}

<!-- .ven lang=en -->
Air pushes the helium out through the knot

```conllu
# sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:t2:o2:1
# text = Air pushes the helium out through the knot
1	Air	air	NOUN	NN	Number=Sing	2	nsubj	_	_
2	pushes	push	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	helium	helium	NOUN	NN	Number=Sing	2	obj	_	_
5	out	out	ADP	RP	_	2	compound:prt	_	_
6	through	through	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	knot	knot	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **push out** | present | Air | the helium |  | the knot |  |  | vn funnel-9.3-1-1 «NP V NP PP.trajectory»: agent=Agent helium=Theme through knot=Trajectory |

### Option 3 {#o3}

<!-- .ven lang=en -->
Helium loses all its lift after a day

```conllu
# sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:t2:o3:1
# text = Helium loses all its lift after a day
1	Helium	helium	NOUN	NN	Number=Sing	2	nsubj	_	_
2	loses	lose	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	all	all	DET	PDT	PronType=Tot	5	det:predet	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	lift	lift	NOUN	NN	Number=Sing	2	obj	_	_
6	after	after	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	day	day	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lose** | present | Helium | Helium's lift |  |  | day |  | vn succeed-74-3-1 «NP V NP»: agent=Agent lift=Eventuality |
| 2 | **lift** |  | Helium |  |  |  |  |  | nom lift «act intransitive»: poss=agent |

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

<!-- .ven lang=en -->
Tiny helium atoms escape through the rubber

```conllu
# sent_id = question:chemistry:20-gases-all-around-breath-and-balloons:t2:o4:1
# text = Tiny helium atoms escape through the rubber
1	Tiny	tiny	ADJ	JJ	Degree=Pos	3	amod	_	_
2	helium	helium	NOUN	NN	Number=Sing	3	compound	_	_
3	atoms	atom	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	escape	escape	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	through	through	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	rubber	rubber	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **escape** | present | Tiny helium atoms |  |  | the rubber |  |  | vn escape-51.1-1-1 «NP V PP.initial\_location»: agent=Theme through rubber=Initial\_Location |

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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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