---
title: Dragging a heavy box across a floor is hard, but the same box on a t… — Pushes, pulls, friction and wheels · tree and pragmatics
description: Dragging a heavy box across a floor is hard, but the same box on a trolley rolls easily. Who acts: Dragging, same box. A sentence of the lesson «Pushes, pulls, friction and wheels» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Pushes, pulls, friction and wheels, sentence 10

<!-- .ven lang=en -->
Dragging a heavy box across a floor is hard, but the same box on a trolley rolls easily.

<!-- .vintro -->
**Who acts:** Dragging, same box · **What happens:** drag, be, roll · **To what, where:** heavy box, floor

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This is a sentence of the lesson «Pushes, pulls, friction and wheels» of the world 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 (Dragging, same box), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:085-pushes-pulls-friction-wheels.lesson:10
# text = Dragging a heavy box across a floor is hard, but the same box on a trolley rolls easily.
# source = school lesson (ours)
# course = world
# lesson = 085-pushes-pulls-friction-wheels.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): R2-punct-next ×1
1	Dragging	drag	VERB	VBG	VerbForm=Ger	9	csubj	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	heavy	heavy	ADJ	JJ	Degree=Pos	4	amod	_	_
4	box	box	NOUN	NN	Number=Sing	1	obj	_	_
5	across	across	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	floor	floor	NOUN	NN	Number=Sing	1	obl	_	_
8	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
9	hard	hard	ADJ	JJ	Degree=Pos	0	root	_	_
10	,	,	PUNCT	,	_	18	punct	_	Agree=R2-punct-next|Haiku=9:punct
11	but	but	CCONJ	CC	_	18	cc	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
13	same	same	ADJ	JJ	Degree=Pos	14	amod	_	_
14	box	box	NOUN	NN	Number=Sing	18	nsubj	_	_
15	on	on	ADP	IN	_	17	case	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
17	trolley	trolley	NOUN	NN	Number=Sing	14	nmod	_	_
18	rolls	roll	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	_
19	easily	easily	ADV	RB	_	18	advmod	_	_
20	.	.	PUNCT	.	_	9	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drag** | gerund |  | a heavy box |  | a floor |  |  | vn carry-11.4 «NP V NP»: agent=Agent box=Theme |
| 2 | **is** | present | Dragging |  |  |  |  | hard *property* | tree rules |
| 3 | **roll** | present | the same box on a trolley |  |  |  |  | easily *property* | vn run-51.3.2-2 «NP V»: agent=Theme |

<!-- .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:world:085-pushes-pulls-friction-wheels.lesson:10`.

**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): R2-punct-next ×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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- ← previous: [Pushes, pulls, friction and wheels, 9](https://md.mova.elamur.ai/free/en/corpora/school/world/85-pushes-pulls-friction-wheels/9/)
- next →: [Pushes, pulls, friction and wheels, 11](https://md.mova.elamur.ai/free/en/corpora/school/world/85-pushes-pulls-friction-wheels/11/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/world/85-pushes-pulls-friction-wheels/)