---
title: Then rivers, wind, ice and gravity carry the pieces off, and drop th… — Weathering and erosion · tree and pragmatics
description: Then rivers, wind, ice and gravity carry the pieces off, and drop them when they slow down. Who acts: rivers. A sentence of the lesson «Weathering and erosion» of the geography course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Weathering and erosion, sentence 5

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Then rivers, wind, ice and gravity carry the pieces off, and drop them when they slow down.

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**Who acts:** rivers · **What happens:** carry off, drop, slow down · **To what, where:** pieces

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This is a sentence of the lesson «Weathering and erosion» 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 (rivers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:052-weathering-and-erosion.lesson:5
# text = Then rivers, wind, ice and gravity carry the pieces off, and drop them when they slow down.
# source = school lesson (ours)
# course = geography
# lesson = 052-weathering-and-erosion.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): R3-conj-first ×1, R5-strong ×1, R8-pos-agree ×1
1	Then	then	ADV	RB	PronType=Dem	9	advmod	_	_
2	rivers	river	NOUN	NNS	Number=Plur	9	nsubj	_	_
3	,	,	PUNCT	,	_	4	punct	_	_
4	wind	wind	NOUN	NN	Number=Sing	2	conj	_	_
5	,	,	PUNCT	,	_	6	punct	_	_
6	ice	ice	NOUN	NN	Number=Sing	2	conj	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	gravity	gravity	NOUN	NN	Number=Sing	2	conj	_	Agree=R3-conj-first|Haiku=6:conj
9	carry	carry	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	pieces	piece	NOUN	NNS	Number=Plur	9	obj	_	_
12	off	off	ADP	RP	_	9	compound:prt	_	Agree=R5-strong|Haiku=11:compound:prt
13	,	,	PUNCT	,	_	15	punct	_	_
14	and	and	CCONJ	CC	_	15	cc	_	_
15	drop	drop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	Agree=R8-pos-agree|Haiku=9:conj|HaikuPos=VERB:VB:Mood=Imp|VerbForm=Fin
16	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	15	obj	_	_
17	when	when	SCONJ	WRB	_	19	mark	_	_
18	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	19	nsubj	_	_
19	slow	slow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	15	advcl	_	_
20	down	down	ADP	RP	_	19	compound:prt	_	_
21	.	.	PUNCT	.	_	9	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 | **carry off** | present | rivers and wind and ice and gravity | the pieces |  |  | then |  | vn carry-11.4 «NP V NP»: agent=Agent piece=Theme |
| 2 | **drop** | present | rivers and wind and ice and gravity *not said here* | pieces *= piece* |  |  |  |  | vn put\_direction-9.4 «NP V NP»: agent=Agent they=Theme |
| 3 | **slow down** | present | rivers *= river* |  |  |  |  |  | vn other\_cos-45.4 «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:geography:052-weathering-and-erosion.lesson:5`.

**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): R3-conj-first ×1, R5-strong ×1, R8-pos-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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