---
title: Identify the period by which humans are known to have reached the Am… — Native peoples of North America · tree and pragmatics
description: Identify the period by which humans are known to have reached the Americas. Exam question 1 of lesson 17 «Native peoples of North America» of the history 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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# Exam question 1 · Native peoples of North America

<!-- .ven lang=en -->
Identify the period by which humans are known to have reached the Americas.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you · **What happens:** identify, know, reach · **To what, where:** period, humans, Americas

<!-- .vabout -->
This is exam question 1 of lesson 17 «Native peoples of North America» of the history course of Mova's primary school, asked in stiff, formal language. 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/history/17-native-peoples-of-north-america/#e1).

## The question {#question}

```conllu
# sent_id = question:history:17-native-peoples-of-north-america:e1:1
# text = Identify the period by which humans are known to have reached the Americas.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	period	period	NOUN	NN	Number=Sing	1	obj	_	_
4	by	by	ADP	IN	_	5	case	_	_
5	which	which	PRON	WDT	PronType=Rel	8	obl	_	_
6	humans	human	NOUN	NNS	Number=Plur	8	nsubj:pass	_	_
7	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	aux:pass	_	_
8	known	know	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	1	parataxis	_	_
9	to	to	PART	TO	_	11	mark	_	_
10	have	have	AUX	VB	VerbForm=Inf	11	aux	_	_
11	reached	reach	VERB	VBN	Tense=Past|VerbForm=Part	8	xcomp	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	Americas	AMERICAS	PROPN	NNPS	Number=Plur	11	obj	_	SpaceAfter=No
14	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the period |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent period=Theme |
| 2 | **know** | present · passive |  | humans |  |  |  |  | tree rules |
| 3 | **reach** | to-infinitive · perfect |  | the Americas |  |  |  |  | vn body\_motion-49.2-1-1 «NP V NP ADV»: agent=Agent americas=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Approximately one thousand years ago

```conllu
# sent_id = question:history:17-native-peoples-of-north-america:e1:o1:1
# text = Approximately one thousand years ago
1	Approximately	approximately	ADV	RB	_	3	advmod	_	_
2	one	one	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	_
3	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	5	obl:unmarked	_	_
5	ago	ago	ADV	RB	_	0	root	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
Approximately three million years ago

```conllu
# sent_id = question:history:17-native-peoples-of-north-america:e1:o2:1
# text = Approximately three million years ago
1	Approximately	approximately	ADV	RB	_	3	advmod	_	_
2	three	three	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	_
3	million	million	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	5	obl:unmarked	_	_
5	ago	ago	ADV	RB	_	0	root	_	_
```

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

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

<!-- .ven lang=en -->
At least fifteen thousand years ago

```conllu
# sent_id = question:history:17-native-peoples-of-north-america:e1:o3:1
# text = At least fifteen thousand years ago
1	At	at	ADP	IN	_	2	case	_	_
2	least	least	ADJ	JJS	Degree=Sup	3	nmod	_	_
3	fifteen	fifteen	NUM	CD	NumForm=Word|NumType=Card	4	compound	_	_
4	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	5	nummod	_	_
5	years	year	NOUN	NNS	Number=Plur	6	obl:unmarked	_	_
6	ago	ago	ADV	RB	_	0	root	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Approximately five hundred years ago

```conllu
# sent_id = question:history:17-native-peoples-of-north-america:e1:o4:1
# text = Approximately five hundred years ago
1	Approximately	approximately	ADV	RB	_	3	advmod	_	_
2	five	five	NUM	CD	NumForm=Word|NumType=Card	3	compound	_	_
3	hundred	hundred	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	years	year	NOUN	NNS	Number=Plur	5	obl:unmarked	_	_
5	ago	ago	ADV	RB	_	0	root	_	_
```

<!-- .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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