---
title: Count them: 4 elephants walk by, and 2 of them have no tusks. Each e… — Natural selection we can watch: moths,… · tree and pragmatics
description: Count them: 4 elephants walk by, and 2 of them have no tusks. Each elephant with tusks has 2. How many tusks, trunks and tails are there? Test 4 · ★★ of lesson 279 «Natural selection we can watch: moths, finches, germs and tuskless elephants» of the biology course of Mova's primary school, with the 
---

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# Test 4 · ★★ · Natural selection we can watch: moths, finches, germs and…

<!-- .ven lang=en -->
Count them: 4 elephants walk by, and 2 of them have no tusks. Each elephant with tusks has 2. How many tusks, trunks and tails are there?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** you, 4 elephants, 2, elephant, many tusks · **What happens:** count, walk, have, be · **To what, where:** them, tusks, 2

<!-- .vabout -->
This is test 4 · ★★ of lesson 279 «Natural selection we can watch: moths, finches, germs and tuskless elephants» of the biology 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/biology/279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants/#t4).

## The question {#question}

<!-- .note -->
*Sentence 1:* Count them: 4 elephants walk by, and 2 of them have no tusks.

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:1
# text = Count them: 4 elephants walk by, and 2 of them have no tusks.
1	Count	count	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	1	obj	_	SpaceAfter=No
3	:	:	PUNCT	:	_	6	punct	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	elephants	elephant	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	walk	walk	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	1	parataxis	_	_
7	by	by	ADP	IN	_	6	obl	_	SpaceAfter=No
8	,	,	PUNCT	,	_	13	punct	_	_
9	and	and	CCONJ	CC	_	13	cc	_	_
10	2	2	NUM	CD	NumForm=Digit|NumType=Card	13	nsubj	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	10	nmod	_	_
13	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
14	no	no	DET	DT	PronType=Neg	15	det	_	_
15	tusks	tusk	NOUN	NNS	Number=Plur	13	obj	_	SpaceAfter=No
16	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **count** | imperative | you *not said here* | them *= they* |  |  |  |  | vn multiply-108 «NP V NP»: agent=Agent they=Theme |
| 2 | **walk** | present | 4 elephants |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=Theme |
| 3 | **have** | present | 2 of elephants | no tusks |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent tusk=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.

<!-- .note -->
*Sentence 2:* Each elephant with tusks has 2.

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:2
# text = Each elephant with tusks has 2.
1	Each	each	DET	DT	PronType=Tot	2	det	_	_
2	elephant	elephant	NOUN	NN	Number=Sing	5	nsubj	_	_
3	with	with	ADP	IN	_	4	case	_	_
4	tusks	tusk	NOUN	NNS	Number=Plur	2	nmod	_	_
5	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	2	2	NUM	CD	NumForm=Digit|NumType=Card	5	obj	_	SpaceAfter=No
7	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | each elephant with tusks | 2 |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent 2=Patient |

<!-- .note -->
*Sentence 3:* How many tusks, trunks and tails are there?

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:3
# text = How many tusks, trunks and tails are there?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	many	many	ADJ	JJ	Degree=Pos	3	amod	_	_
3	tusks	tusk	NOUN	NNS	Number=Plur	9	nsubj	_	SpaceAfter=No
4	,	,	PUNCT	,	_	5	punct	_	_
5	trunks	trunk	NOUN	NNS	Number=Plur	3	conj	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	tails	tail	NOUN	NNS	Number=Plur	3	conj	_	_
8	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
9	there	there	ADV	RB	PronType=Dem	0	root	_	SpaceAfter=No
10	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | many tusks and trunks and tails |  |  |  |  | there *property* | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
4 tusks, 4 trunks and 4 tails

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:o1:1
# text = 4 tusks, 4 trunks and 4 tails
1	4	4	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	tusks	tusk	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	5	punct	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	trunks	trunk	NOUN	NNS	Number=Plur	2	conj	_	_
6	and	and	CCONJ	CC	_	8	cc	_	_
7	4	4	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	tails	tail	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
8 tusks, 4 trunks and 4 tails

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:o2:1
# text = 8 tusks, 4 trunks and 4 tails
1	8	8	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	tusks	tusk	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	5	punct	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	trunks	trunk	NOUN	NNS	Number=Plur	2	conj	_	_
6	and	and	CCONJ	CC	_	8	cc	_	_
7	4	4	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	tails	tail	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
4 tusks, 2 trunks and 4 tails

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:o3:1
# text = 4 tusks, 2 trunks and 4 tails
1	4	4	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	tusks	tusk	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	5	punct	_	_
4	2	2	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	trunks	trunk	NOUN	NNS	Number=Plur	2	conj	_	_
6	and	and	CCONJ	CC	_	8	cc	_	_
7	4	4	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	tails	tail	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
2 tusks, 4 trunks and 2 tails

```conllu
# sent_id = question:biology:279-natural-selection-we-can-watch-moths-finches-germs-and-tuskless-elephants:t4:o4:1
# text = 2 tusks, 4 trunks and 2 tails
1	2	2	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	tusks	tusk	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	5	punct	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	trunks	trunk	NOUN	NNS	Number=Plur	2	conj	_	_
6	and	and	CCONJ	CC	_	8	cc	_	_
7	2	2	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	tails	tail	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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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