---
title: When a faster traveller chases a slower one going the same way, the… — Catching up · tree and pragmatics
description: When a faster traveller chases a slower one going the same way, the gap shrinks by the difference of the speeds every hour. Who acts: faster traveller, slower one, gap. A sentence of the lesson «Catching up» of the lessons course of Mova's primary school with its dependency tree and the pragmatics o
---

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# Catching up, sentence 0

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When a faster traveller chases a slower one going the same way, the gap shrinks by the difference of the speeds every hour.

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**Who acts:** faster traveller, slower one, gap · **What happens:** chase, go, shrink · **To what, where:** slower one, same way

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This is a sentence of the lesson «Catching up» of the lessons 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 (faster traveller, slower one, gap), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:lessons:164-catching-up.lesson:0
# text = When a faster traveller chases a slower one going the same way, the gap shrinks by the difference of the speeds every hour.
# source = school lesson (ours)
# course = lessons
# lesson = 164-catching-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): no change
1	When	when	SCONJ	WRB	_	5	mark	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	faster	fast	ADJ	JJR	Degree=Cmp	4	amod	_	_
4	traveller	traveller	NOUN	NN	Number=Sing	5	nsubj	_	_
5	chases	chase	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	advcl	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	slower	slow	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	one	one	NOUN	NN	Number=Sing	5	obj	_	_
9	going	go	VERB	VBG	VerbForm=Ger	8	acl	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
11	same	same	ADJ	JJ	Degree=Pos	12	amod	_	_
12	way	way	NOUN	NN	Number=Sing	9	obl:unmarked	_	_
13	,	,	PUNCT	,	_	16	punct	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	gap	gap	NOUN	NN	Number=Sing	16	nsubj	_	_
16	shrinks	shrink	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
17	by	by	ADP	IN	_	19	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	difference	difference	NOUN	NN	Number=Sing	16	obl	_	_
20	of	of	ADP	IN	_	22	case	_	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	_	_
22	speeds	speed	NOUN	NNS	Number=Plur	19	nmod	_	_
23	every	every	DET	DT	PronType=Tot	24	det	_	_
24	hour	hour	NOUN	NN	Number=Sing	16	obl:unmarked	_	_
25	.	.	PUNCT	.	_	16	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 | **chase** | present | a faster traveller | a slower one |  |  |  |  | vn chase-51.6 «NP V NP»: agent=Agent one=Theme |
| 2 | **go** | gerund | a slower one *not said here* | the same way |  |  |  |  | vn disappearance-48.2-1 «NP V»: agent=Theme |
| 3 | **shrink** | present | the gap |  |  |  | hour | by the difference of the speeds | vn bend-45.2 «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.

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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:lessons:164-catching-up.lesson:0`.

**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: [Moving towards each other and moving a…, 2](https://md.mova.elamur.ai/free/en/corpora/school/lessons/163-meeting-and-moving-apart/2/)
- next →: [Catching up, 1](https://md.mova.elamur.ai/free/en/corpora/school/lessons/164-catching-up/1/)
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