---
title: Some molecules come in mirror-image pairs, like left and right glove… — Molecules: when atoms join up · tree and pragmatics
description: Some molecules come in mirror-image pairs, like left and right gloves, and the two can smell different: one version of carvone smells of spearmint, its mirror twin of caraway seeds. Who acts: molecules, two. A sentence of the lesson «Molecules: when atoms join up» of the chemistry course of Mova's p
---

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# Molecules: when atoms join up, sentence 14

<!-- .ven lang=en -->
Some molecules come in mirror-image pairs, like left and right gloves, and the two can smell different: one version of carvone smells of spearmint, its mirror twin of caraway seeds.

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**Who acts:** molecules, two · **What happens:** come, smell · **To what, where:** image pairs, one version

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This is a sentence of the lesson «Molecules: when atoms join up» of the chemistry 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 (molecules, two), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:003-molecules-when-atoms-join-up.lesson:14
# text = Some molecules come in mirror-image pairs, like left and right gloves, and the two can smell different: one version of carvone smells of spearmint, its mirror twin of caraway seeds.
# source = school lesson (ours)
# course = chemistry
# lesson = 003-molecules-when-atoms-join-up.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): R5-strong ×2
1	Some	some	DET	DT	PronType=Ind	2	det	_	_
2	molecules	molecule	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	come	come	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	in	in	ADP	IN	_	8	case	_	_
5	mirror	mirror	NOUN	NN	Number=Sing	7	compound	_	Agree=R5-strong|Haiku=8:compound
6	-	-	PUNCT	HYPH	_	5	punct	_	_
7	image	image	NOUN	NN	Number=Sing	8	compound	_	_
8	pairs	pair	NOUN	NNS	Number=Plur	3	obl	_	_
9	,	,	PUNCT	,	_	11	punct	_	_
10	like	like	ADP	IN	_	11	case	_	_
11	left	left	NOUN	NN	Number=Sing	8	nmod	_	_
12	and	and	CCONJ	CC	_	14	cc	_	_
13	right	right	ADJ	JJ	Degree=Pos	11	conj	_	Agree=R5-strong|Haiku=14:amod
14	gloves	glove	NOUN	NNS	Number=Plur	11	conj	_	_
15	,	,	PUNCT	,	_	20	punct	_	_
16	and	and	CCONJ	CC	_	20	cc	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	two	two	NUM	CD	NumForm=Word|NumType=Card	20	nsubj	_	_
19	can	can	AUX	MD	VerbForm=Fin	20	aux	_	_
20	smell	smell	VERB	VB	VerbForm=Inf	3	conj	_	_
21	different	different	ADJ	JJ	Degree=Pos	20	xcomp	_	_
22	:	:	PUNCT	:	_	20	punct	_	_
23	one	one	NUM	CD	NumForm=Word|NumType=Card	24	nummod	_	_
24	version	version	NOUN	NN	Number=Sing	27	obl	_	_
25	of	of	ADP	IN	_	26	case	_	_
26	carvone	carvone	NOUN	NN	Number=Sing	24	nmod	_	_
27	smells	smell	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	20	parataxis	_	_
28	of	of	ADP	IN	_	29	case	_	_
29	spearmint	spearmint	NOUN	NN	Number=Sing	27	obl	_	_
30	,	,	PUNCT	,	_	33	punct	_	_
31	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	33	nmod:poss	_	_
32	mirror	mirror	NOUN	NN	Number=Sing	33	compound	_	_
33	twin	twin	NOUN	NN	Number=Sing	24	appos	_	_
34	of	of	ADP	IN	_	36	case	_	_
35	caraway	caraway	NOUN	NN	Number=Sing	36	compound	_	_
36	seeds	seed	NOUN	NNS	Number=Plur	33	nmod	_	_
37	.	.	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 | **come** | present | some molecules |  |  | image pairs like left and gloves |  |  | vn appear-48.1.1 «NP V PP.location»: agent=Theme in pair=Location |
| 2 | **smell** | can | the two |  |  |  |  | different *property* | vn stimulus\_subject-30.4 «NP V ADJ»: agent=Stimulus |
| 3 | **smell** | present |  | one version of carvone |  |  |  | of spearmint | vn smell\_emission-43.3 «NP V PP.theme»: agent=Location of spearmint=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.

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**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:chemistry:003-molecules-when-atoms-join-up.lesson:14`.

**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): R5-strong ×2. **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/).

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