---
title: Alfred Wegener proposed in 1912 that continents drift, but most scie… — Plate tectonics · tree and pragmatics
description: Alfred Wegener proposed in 1912 that continents drift, but most scientists rejected the idea until the 1960s, partly because he could not explain what moved them. Who acts: Alfred, continents, most scientists. A sentence of the lesson «Plate tectonics» of the geography course of Mova's primary schoo
---

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# Plate tectonics, sentence 13

<!-- .ven lang=en -->
Alfred Wegener proposed in 1912 that continents drift, but most scientists rejected the idea until the 1960s, partly because he could not explain what moved them.

<!-- .vintro -->
**Who acts:** Alfred, continents, most scientists · **What happens:** propose, drift, reject, not explain, move · **To what, where:** 1912, idea, continents · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «Plate tectonics» of the geography 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 (Alfred, continents, most scientists), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:042-plate-tectonics.lesson:13
# text = Alfred Wegener proposed in 1912 that continents drift, but most scientists rejected the idea until the 1960s, partly because he could not explain what moved them.
# source = school lesson (ours)
# course = geography
# lesson = 042-plate-tectonics.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): R8-pos-agree ×1
1	Alfred	Alfred	PROPN	NNP	Number=Sing	3	nsubj	_	_
2	Wegener	Wegener	PROPN	NNP	Number=Sing	1	flat	_	_
3	proposed	propose	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	1912	1912	NUM	CD	NumForm=Digit|NumType=Card	3	obl	_	_
6	that	that	SCONJ	IN	_	8	mark	_	_
7	continents	continent	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	drift	drift	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	ccomp	_	Agree=R8-pos-agree|Haiku=3:ccomp|HaikuPos=NOUN:NN:Number=Sing
9	,	,	PUNCT	,	_	13	punct	_	_
10	but	but	CCONJ	CC	_	13	cc	_	_
11	most	most	ADJ	JJS	Degree=Sup	12	amod	_	_
12	scientists	scientist	NOUN	NNS	Number=Plur	13	nsubj	_	_
13	rejected	reject	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	3	conj	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	idea	idea	NOUN	NN	Number=Sing	13	obj	_	_
16	until	until	ADP	IN	_	18	case	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	1960s	1960s	NOUN	NNS	Number=Ptan|NumForm=Combi|NumType=Card	13	obl	_	_
19	,	,	PUNCT	,	_	25	punct	_	_
20	partly	partly	ADV	RB	_	25	advmod	_	_
21	because	because	SCONJ	IN	_	25	mark	_	_
22	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	25	nsubj	_	_
23	could	could	AUX	MD	VerbForm=Fin	25	aux	_	_
24	not	not	PART	RB	Polarity=Neg	25	advmod	_	_
25	explain	explain	VERB	VB	VerbForm=Inf	13	advcl	_	_
26	what	what	PRON	WP	PronType=Int	27	nsubj	_	_
27	moved	move	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	25	ccomp	_	_
28	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	27	obj	_	_
29	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **propose** | past | Alfred |  |  | 1912 |  |  | vn say-37.7-1-1 «NP V that S»: agent=Agent clause=Topic |
| 2 | **drift** | present | continents |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 3 | **reject** | past | most scientists | the idea |  |  | until the 1960s |  | vn reject-77.2-1 «NP V NP»: agent=Agent idea=Theme |
| 4 | **not** **explain** *speech: assert* | could | Alfred |  |  |  |  | partly *property* | vn transfer\_mesg-37.1.1 «NP V how S»: agent=Agent clause=Topic |
| 5 | **move** | past |  | continents *= continent* |  |  |  |  | vn roll-51.3.1 «NP V ADJ.result»: agent=Theme they=Result |

<!-- .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:geography:042-plate-tectonics.lesson:13`.

**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): R8-pos-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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