---
title: why's there steel rods inside concrete — Building strong things: bridges, tower… · tree and pragmatics
description: why's there steel rods inside concrete Test 11 · ★★ of lesson 86 «Building strong things: bridges, towers and shapes» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 11 · ★★ · Building strong things: bridges, towers and shapes

<!-- .ven lang=en -->
why's there steel rods inside concrete

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** steel rods · **What happens:** be

<!-- .vabout -->
This is test 11 · ★★ of lesson 86 «Building strong things: bridges, towers and shapes» of the world course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/world/86-building-strong-things/#t11).

## The question {#question}

```conllu
# sent_id = question:world:86-building-strong-things:t11:1
# text = why's there steel rods inside concrete
1	why	why	ADV	WRB	PronType=Rel	0	root	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	1	cop	_	_
3	there	there	PRON	EX	PronType=Dem	5	expl	_	_
4	steel	steel	NOUN	NN	Number=Sing	5	compound	_	_
5	rods	rod	NOUN	NNS	Number=Plur	1	nsubj	_	_
6	inside	inside	ADP	IN	_	7	case	_	_
7	concrete	concrete	NOUN	NN	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | steel rods inside concrete |  |  |  |  | why *property* | tree rules |

<!-- .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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The steel keeps the concrete warm and stops it cracking in winter

```conllu
# sent_id = question:world:86-building-strong-things:t11:o1:1
# text = The steel keeps the concrete warm and stops it cracking in winter
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	steel	steel	NOUN	NN	Number=Sing	3	nsubj	_	_
3	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	concrete	concrete	NOUN	NN	Number=Sing	3	obj	_	_
6	warm	warm	ADJ	JJ	Degree=Pos	3	xcomp	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	stops	stop	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
9	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	obj	_	_
10	cracking	crack	VERB	VBG	VerbForm=Ger	8	xcomp	_	_
11	in	in	ADP	IN	_	12	case	_	_
12	winter	winter	NOUN	NN	Number=Sing	10	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | the steel | the concrete |  |  |  | warm *property* | vn keep-15.2 «NP V NP»: agent=Agent concrete=Theme |
| 2 | **stop** | present | the steel *not said here* | concrete |  |  |  |  | tree rules |
| 3 | **crack** | gerund | the steel *not said here* |  |  |  | winter |  | vn sound\_emission-43.2 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
The steel stops water soaking into it

```conllu
# sent_id = question:world:86-building-strong-things:t11:o2:1
# text = The steel stops water soaking into it
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	steel	steel	NOUN	NN	Number=Sing	3	nsubj	_	_
3	stops	stop	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	water	water	NOUN	NN	Number=Sing	3	obj	_	_
5	soaking	soak	VERB	VBG	VerbForm=Ger	4	acl	_	_
6	into	into	ADP	IN	_	7	case	_	_
7	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | present | the steel | water |  | water |  |  | vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality water=Eventuality |
| 2 | **soak** | gerund | water *not said here* |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Concrete is weak in tension, and the steel resists stretching

```conllu
# sent_id = question:world:86-building-strong-things:t11:o3:1
# text = Concrete is weak in tension, and the steel resists stretching
1	Concrete	concrete	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	weak	weak	ADJ	JJ	Degree=Pos	0	root	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	tension	tension	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	_	_
7	and	and	CCONJ	CC	_	10	cc	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	steel	steel	NOUN	NN	Number=Sing	10	nsubj	_	_
10	resists	resist	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	stretching	stretch	VERB	VBG	VerbForm=Ger	10	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Concrete |  |  | tension |  | weak *property* | tree rules |
| 2 | **resist** | present | the steel |  |  |  |  |  | tree rules |
| 3 | **stretch** | gerund |  |  |  |  |  |  | vn bend-45.2 «NP.patient V»: agent=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The steel makes the concrete lighter

```conllu
# sent_id = question:world:86-building-strong-things:t11:o4:1
# text = The steel makes the concrete lighter
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	steel	steel	NOUN	NN	Number=Sing	3	nsubj	_	_
3	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	concrete	concrete	NOUN	NN	Number=Sing	3	obj	_	_
6	lighter	light	ADJ	JJR	Degree=Cmp	3	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | the steel | the concrete |  |  |  | light *property* | vn build-26.1-1 «NP.material V NP»: agent=Material concrete=Product |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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