---
title: Burnt gases leave through the exhaust pipe, and a catalytic converte… — Inside a car: engine, gears and the dashboard · tree and pragmatics
description: Burnt gases leave through the exhaust pipe, and a catalytic converter changes some poisonous gases into less harmful ones; exhaust fumes include invisible carbon monoxide; burning fuel also makes water vapour, which can cool to drips at the exhaust pipe on a cold morning. Who acts: Burnt gases, cata
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/17-inside-a-car/7/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Inside a car: engine, gears and the da…](https://md.mova.elamur.ai/free/en/corpora/school/technology/17-inside-a-car/) / 7

# Inside a car: engine, gears and the dashboard, sentence 7

<!-- .ven lang=en -->
Burnt gases leave through the exhaust pipe, and a catalytic converter changes some poisonous gases into less harmful ones; exhaust fumes include invisible carbon monoxide; burning fuel also makes water vapour, which can cool to drips at the exhaust pipe on a cold morning.

<!-- .vintro -->
**Who acts:** Burnt gases, catalytic converter, exhaust fumes, burning fuel, water vapour · **What happens:** leave, change, include, burn, make, cool · **To what, where:** exhaust pipe, poisonous gases, invisible carbon monoxide, water vapour

<!-- .vabout -->
This is a sentence of the lesson «Inside a car: engine, gears and the dashboard» of the technology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Burnt gases, catalytic converter, exhaust fumes, burning fuel), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:017-inside-a-car.lesson:7
# text = Burnt gases leave through the exhaust pipe, and a catalytic converter changes some poisonous gases into less harmful ones; exhaust fumes include invisible carbon monoxide; burning fuel also makes water vapour, which can cool to drips at the exhaust pipe on a cold morning.
# source = school lesson (ours)
# course = technology
# lesson = 017-inside-a-car.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R3-conj-first ×1, R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×1
1	Burnt	burnt	ADJ	JJ	Degree=Pos	2	amod	_	_
2	gases	gas	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	leave	leave	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	through	through	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	exhaust	exhaust	NOUN	NN	Number=Sing	7	compound	_	_
7	pipe	pipe	NOUN	NN	Number=Sing	3	obl	_	_
8	,	,	PUNCT	,	_	13	punct	_	Agree=R6-punct-agree|Haiku=24:punct
9	and	and	CCONJ	CC	_	13	cc	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	catalytic	catalytic	ADJ	JJ	Degree=Pos	12	amod	_	_
12	converter	converter	NOUN	NN	Number=Sing	13	nsubj	_	_
13	changes	change	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
14	some	some	DET	DT	PronType=Ind	16	det	_	_
15	poisonous	poisonous	ADJ	JJ	Degree=Pos	16	amod	_	_
16	gases	gas	NOUN	NNS	Number=Plur	13	obj	_	_
17	into	into	ADP	IN	_	20	case	_	_
18	less	less	ADV	RBR	Degree=Cmp	19	advmod	_	_
19	harmful	harmful	ADJ	JJ	Degree=Pos	20	amod	_	_
20	ones	one	NOUN	NNS	Number=Plur	13	obl	_	Agree=R5-strong|Haiku=16:nmod
21	;	;	PUNCT	:	_	23	punct	_	_
22	exhaust	exhaust	NOUN	NN	Number=Sing	23	compound	_	_
23	fumes	fume	NOUN	NNS	Number=Plur	24	nsubj	_	_
24	include	include	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
25	invisible	invisible	ADJ	JJ	Degree=Pos	27	amod	_	_
26	carbon	carbon	NOUN	NN	Number=Sing	27	compound	_	_
27	monoxide	monoxide	NOUN	NN	Number=Sing	24	obj	_	_
28	;	;	PUNCT	,	_	29	punct	_	_
29	burning	burn	VERB	VBG	Tense=Pres|VerbForm=Part	30	amod	_	Agree=R5-strong|Haiku=32:nsubj
30	fuel	fuel	NOUN	NN	Number=Sing	32	nsubj	_	Agree=R5-strong|Haiku=29:obj
31	also	also	ADV	RB	_	32	advmod	_	_
32	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	Agree=R3-conj-first|Haiku=24:conj
33	water	water	NOUN	NN	Number=Sing	34	compound	_	_
34	vapour	vapour	NOUN	NN	Number=Sing	32	obj	_	_
35	,	,	PUNCT	,	_	38	punct	_	_
36	which	which	PRON	WDT	PronType=Rel	38	nsubj	_	_
37	can	can	AUX	MD	VerbForm=Fin	38	aux	_	_
38	cool	cool	VERB	VB	VerbForm=Inf	34	acl:relcl	_	_
39	to	to	ADP	IN	_	40	case	_	_
40	drips	drip	NOUN	NNS	Number=Plur	38	obl	_	_
41	at	at	ADP	IN	_	44	case	_	_
42	the	the	DET	DT	Definite=Def|PronType=Art	44	det	_	_
43	exhaust	exhaust	NOUN	NN	Number=Sing	44	compound	_	_
44	pipe	pipe	NOUN	NN	Number=Sing	38	obl	_	_
45	on	on	ADP	IN	_	48	case	_	_
46	a	a	DET	DT	Definite=Ind|PronType=Art	48	det	_	_
47	cold	cold	ADJ	JJ	Degree=Pos	48	amod	_	_
48	morning	morning	NOUN	NN	Number=Sing	44	nmod	_	_
49	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** | present | Burnt gases |  |  | the exhaust pipe |  |  | vn escape-51.1-1-1 «NP V PP.initial\_location»: agent=Theme through pipe=Initial\_Location |
| 2 | **change** | present | a catalytic converter | some poisonous gases |  |  |  | into harmful ones *result* | vn turn-26.6.1-1 «NP V NP.patient PP.result»: agent=Agent gas=Patient into one=Result |
| 3 | **include** | present | exhaust fumes | invisible carbon monoxide |  |  |  |  | vn involve-107.1 «NP V NP»: agent=Agent monoxide=Theme |
| 4 | **burn** | gerund |  |  |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |
| 5 | **make** | present | burning fuel | water vapour |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset vapour=Product |
| 6 | **cool** | can | water vapour |  |  | the exhaust pipe on a cold morning |  | to drips | vn other\_cos-45.4 «NP.patient V»: agent=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.

<!-- div src -->

**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:technology:017-inside-a-car.lesson:7`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R3-conj-first ×1, R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

<!-- pn -->
- ← previous: [Inside a car: engine, gears and the da…, 6](https://md.mova.elamur.ai/free/en/corpora/school/technology/17-inside-a-car/6/)
- next →: [Inside a car: engine, gears and the da…, 8](https://md.mova.elamur.ai/free/en/corpora/school/technology/17-inside-a-car/8/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/17-inside-a-car/)

