---
title: Life as we know it needs liquid water, so scientists look for planet… — Exoplanets and the search for life · tree and pragmatics
description: Life as we know it needs liquid water, so scientists look for planets in the "Goldilocks zone", not too hot and not too cold, like Goldilocks' porridge. Who acts: we, Life, scientists. A sentence of the lesson «Exoplanets and the search for life» of the space course of Mova's primary school with its
---

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# Exoplanets and the search for life, sentence 3

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Life as we know it needs liquid water, so scientists look for planets in the "Goldilocks zone", not too hot and not too cold, like Goldilocks' porridge.

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**Who acts:** we, Life, scientists · **What happens:** know, need, look · **To what, where:** star, Goldilocks zone

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This is a sentence of the lesson «Exoplanets and the search for life» of the space 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, Life, scientists), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:026-exoplanets-and-the-search-for-life.lesson:3
# text = Life as we know it needs liquid water, so scientists look for planets in the "Goldilocks zone", not too hot and not too cold, like Goldilocks' porridge.
# source = school lesson (ours)
# course = space
# lesson = 026-exoplanets-and-the-search-for-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): R6-punct-agree ×1
1	Life	life	NOUN	NN	Number=Sing	6	nsubj	_	_
2	as	as	SCONJ	IN	_	4	mark	_	_
3	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	4	nsubj	_	_
4	know	know	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	6	advcl	_	_
5	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	obj	_	_
6	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	liquid	liquid	ADJ	JJ	Degree=Pos	8	amod	_	_
8	water	water	NOUN	NN	Number=Sing	6	obj	_	_
9	,	,	PUNCT	,	_	12	punct	_	_
10	so	so	ADV	RB	_	12	advmod	_	_
11	scientists	scientist	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	look	look	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
13	for	for	ADP	IN	_	14	case	_	_
14	planets	planet	NOUN	NNS	Number=Plur	12	obl	_	_
15	in	in	ADP	IN	_	19	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
17	"	"	PUNCT	``	_	19	punct	_	_
18	Goldilocks	Goldilocks	PROPN	NNP	Number=Sing	19	compound	_	_
19	zone	zone	NOUN	NN	Number=Sing	12	obl	_	_
20	"	"	PUNCT	''	_	19	punct	_	Agree=R6-punct-agree|Haiku=12:punct
21	,	,	PUNCT	,	_	24	punct	_	_
22	not	not	PART	RB	Polarity=Neg	24	advmod	_	_
23	too	too	ADV	RB	_	24	advmod	_	_
24	hot	hot	ADJ	JJ	Degree=Pos	19	amod	_	_
25	and	and	CCONJ	CC	_	28	cc	_	_
26	not	not	PART	RB	Polarity=Neg	28	advmod	_	_
27	too	too	ADV	RB	_	28	advmod	_	_
28	cold	cold	ADJ	JJ	Degree=Pos	24	conj	_	_
29	,	,	PUNCT	,	_	33	punct	_	_
30	like	like	ADP	IN	_	33	case	_	_
31	Goldilocks	Goldilocks	PROPN	NNP	Number=Sing	33	nmod:poss	_	_
32	'	's	PART	POS	_	31	case	_	_
33	porridge	porridge	NOUN	NN	Number=Sing	12	obl	_	_
34	.	.	PUNCT	.	_	6	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 | **know** | present | we |  |  |  |  |  | vn comprehend-87.2-1-1-1 «NP V»: agent=Experiencer |
| 2 | **need** | present | Life | star |  |  |  |  | tree rules |
| 3 | **look** | present | scientists |  |  | the Goldilocks zone |  | for planets; like Goldilocks's porridge | vn rummage-35.5 «NP V PP.location PP.theme»: agent=Agent for planet=Theme in zone=Location |

<!-- .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:space:026-exoplanets-and-the-search-for-life.lesson:3`.

**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): R6-punct-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/).

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