---
title: How do we know? — Deep time and the story of life · tree and pragmatics
description: How do we know? Who acts: we. A sentence of the lesson «Deep time and the story of life» of the geography course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Deep time and the story of life, sentence 2

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How do we know?

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**Who acts:** we · **What happens:** know

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This is a sentence of the lesson «Deep time and the story of life» of the geography 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 (we), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:058-deep-time-and-the-story-of-life.lesson:2
# text = How do we know?
# source = school lesson (ours)
# course = geography
# lesson = 058-deep-time-and-the-story-of-life.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): no change
1	How	how	ADV	WRB	PronType=Int	4	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	4	nsubj	_	_
4	know	know	VERB	VB	VerbForm=Inf	0	root	_	_
5	?	?	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: wh-question
- act: ask
- voice: character
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **know** | present · do-support | we |  |  |  |  |  | vn comprehend-87.2-1-1-1 «NP V»: agent=Experiencer |

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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:geography:058-deep-time-and-the-story-of-life.lesson:2`.

**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): no change. **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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- ← previous: [Deep time and the story of life, 1](https://md.mova.elamur.ai/free/en/corpora/school/geography/58-deep-time-and-the-story-of-life/1/)
- next →: [Deep time and the story of life, 3](https://md.mova.elamur.ai/free/en/corpora/school/geography/58-deep-time-and-the-story-of-life/3/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/geography/58-deep-time-and-the-story-of-life/)