---
title: Mercury is a metal that is liquid at room temperature, and sodium is… — One counterexample is enough · tree and pragmatics
description: Mercury is a metal that is liquid at room temperature, and sodium is a metal soft enough to cut with a knife. Who acts: Mercury, sodium. A sentence of the lesson «One counterexample is enough» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/187-one-counterexample-is-enough/19/)

<!-- 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/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / [One counterexample is enough](https://md.mova.elamur.ai/free/en/corpora/school/world/187-one-counterexample-is-enough/) / 19

# One counterexample is enough, sentence 19

<!-- .ven lang=en -->
Mercury is a metal that is liquid at room temperature, and sodium is a metal soft enough to cut with a knife.

<!-- .vintro -->
**Who acts:** Mercury, sodium · **What happens:** be, cut · **To what, where:** metal, room temperature

<!-- .vabout -->
This is a sentence of the lesson «One counterexample is enough» of the world 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 (Mercury, sodium), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:187-one-counterexample-is-enough.lesson:19
# text = Mercury is a metal that is liquid at room temperature, and sodium is a metal soft enough to cut with a knife.
# source = school lesson (ours)
# course = world
# lesson = 187-one-counterexample-is-enough.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): R2-punct-next ×1
1	Mercury	Mercury	PROPN	NNP	Number=Sing	7	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	metal	metal	NOUN	NN	Number=Sing	0	root	_	_
5	that	that	PRON	WDT	PronType=Rel	7	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
7	liquid	liquid	ADJ	JJ	Degree=Pos	4	acl:relcl	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	room	room	NOUN	NN	Number=Sing	10	compound	_	_
10	temperature	temperature	NOUN	NN	Number=Sing	7	obl	_	_
11	,	,	PUNCT	,	_	16	punct	_	Agree=R2-punct-next|Haiku=4:punct
12	and	and	CCONJ	CC	_	16	cc	_	_
13	sodium	sodium	NOUN	NN	Number=Sing	16	nsubj	_	_
14	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	_	_
15	a	a	DET	DT	Definite=Ind|PronType=Art	16	det	_	_
16	metal	metal	NOUN	NN	Number=Sing	4	conj	_	_
17	soft	soft	ADJ	JJ	Degree=Pos	16	amod	_	_
18	enough	enough	ADV	RB	_	17	advmod	_	_
19	to	to	PART	TO	_	20	mark	_	_
20	cut	cut	VERB	VB	VerbForm=Inf	17	advcl	_	_
21	with	with	ADP	IN	_	23	case	_	_
22	a	a	DET	DT	Definite=Ind|PronType=Art	23	det	_	_
23	knife	knife	NOUN	NN	Number=Sing	20	obl	_	_
24	.	.	PUNCT	.	_	4	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 | **is a** | present |  | a metal and a metal |  |  |  |  | tree rules |
| 2 | **is** | present | Mercury |  |  | room temperature |  | liquid *property* | tree rules |
| 3 | **is a** | present | sodium | a metal |  |  |  |  | tree rules |
| 4 | **cut** | to-infinitive | sodium *not said here* |  |  |  |  | with a knife | vn cut-21.1-1 «NP V PP PP»: agent=Agent with knife=Instrument |

<!-- .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:world:187-one-counterexample-is-enough.lesson:19`.

**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): R2-punct-next ×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: [One counterexample is enough, 18](https://md.mova.elamur.ai/free/en/corpora/school/world/187-one-counterexample-is-enough/18/)
- next →: [One counterexample is enough, 20](https://md.mova.elamur.ai/free/en/corpora/school/world/187-one-counterexample-is-enough/20/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/187-one-counterexample-is-enough/)