---
title: Sledges are hard to stop on packed snow and ice, so a slope that run… — Ice on ponds and cold water in winter · tree and pragmatics
description: Sledges are hard to stop on packed snow and ice, so a slope that runs out onto water or a road is a trap. Who acts: Sledges, slope. A sentence of the lesson «Ice on ponds and cold water in winter» of the medicine course of Mova's primary school with its dependency tree and the pragmatics of every cl
---

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# Ice on ponds and cold water in winter, sentence 16

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Sledges are hard to stop on packed snow and ice, so a slope that runs out onto water or a road is a trap.

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**Who acts:** Sledges, slope · **What happens:** be, stop, run out · **To what, where:** packed snow, water, trap

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This is a sentence of the lesson «Ice on ponds and cold water in winter» of the medicine 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 (Sledges, slope), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:medicine:074-ice-on-ponds-and-cold-water-in-winter.lesson:16
# text = Sledges are hard to stop on packed snow and ice, so a slope that runs out onto water or a road is a trap.
# source = school lesson (ours)
# course = medicine
# lesson = 074-ice-on-ponds-and-cold-water-in-winter.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): R1-cc-next ×1, R7-rel-agree ×1
1	Sledges	sledge	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	hard	hard	ADJ	JJ	Degree=Pos	0	root	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	stop	stop	VERB	VB	VerbForm=Inf	3	xcomp	_	_
6	on	on	ADP	IN	_	8	case	_	_
7	packed	packed	ADJ	JJ	Degree=Pos	8	amod	_	_
8	snow	snow	NOUN	NN	Number=Sing	5	obl	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	ice	ice	NOUN	NN	Number=Sing	8	conj	_	_
11	,	,	PUNCT	,	_	14	punct	_	_
12	so	so	ADV	RB	_	14	advmod	_	_
13	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
14	slope	slope	NOUN	NN	Number=Sing	3	conj	_	_
15	that	that	PRON	WDT	PronType=Rel	16	nsubj	_	_
16	runs	run	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	acl:relcl	_	_
17	out	out	ADP	RP	_	16	compound:prt	_	Agree=R7-rel-agree|Haiku=16:advmod|HaikuPos=ADV:RB:_
18	onto	onto	ADP	IN	_	19	case	_	_
19	water	water	NOUN	NN	Number=Sing	16	obl	_	_
20	or	or	CCONJ	CC	_	22	cc	_	Agree=R1-cc-next|Haiku=19:cc
21	a	a	DET	DT	Definite=Ind|PronType=Art	22	det	_	_
22	road	road	NOUN	NN	Number=Sing	19	conj	_	_
23	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	25	cop	_	_
24	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	_	_
25	trap	trap	NOUN	NN	Number=Sing	16	conj	_	_
26	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Sledges |  |  |  |  | hard *property* | tree rules |
| 2 | **stop** | to-infinitive | Sledges *not said here* |  |  | packed snow and ice |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |
| 3 | **run out** | present | a slope |  |  | water or a road |  |  | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme onto water=Trajectory |
| 4 | **is a** | present | a slope *not said here* | a trap |  |  |  |  | tree rules |

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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:medicine:074-ice-on-ponds-and-cold-water-in-winter.lesson:16`.

**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): R1-cc-next ×1, R7-rel-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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