---
title: "Spring forward, fall back" ("fall" is American for autumn): the spr… — The date line and summer time: clocks going forw… · tree and pragmatics
description: "Spring forward, fall back" ("fall" is American for autumn): the spring night is only 23 hours long, the autumn night 25. Who acts: Spring, fall, spring night. A sentence of the lesson «The date line and summer time: clocks going forward and back» of the world course of Mova's primary school with it
---

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# The date line and summer time: clocks going forward and back, sentence 6

<!-- .ven lang=en -->
"Spring forward, fall back" ("fall" is American for autumn): the spring night is only 23 hours long, the autumn night 25.

<!-- .vintro -->
**Who acts:** Spring, fall, spring night · **What happens:** fall back, be · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «The date line and summer time: clocks going forward and back» 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 (Spring, fall, spring night), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:121-date-line-and-summer-time.lesson:6
# text = "Spring forward, fall back" ("fall" is American for autumn): the spring night is only 23 hours long, the autumn night 25.
# source = school lesson (ours)
# course = world
# lesson = 121-date-line-and-summer-time.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): R6-punct-agree ×1, R8-pos-agree ×1
1	"	"	PUNCT	``	_	5	punct	_	_
2	Spring	spring	NOUN	NN	Number=Sing	5	nsubj	_	_
3	forward	forward	ADV	RB	_	2	advmod	_	_
4	,	,	PUNCT	,	_	2	punct	_	_
5	fall	fall	VERB	VB	VerbForm=Inf	0	root	_	_
6	back	back	ADV	RB	_	5	advmod	_	_
7	"	"	PUNCT	''	_	5	punct	_	Agree=R8-pos-agree|Haiku=5:punct|HaikuPos=PUNCT:``:_
8	(	(	PUNCT	-LRB-	_	13	punct	_	_
9	"	"	PUNCT	``	_	10	punct	_	_
10	fall	fall	NOUN	NN	Number=Sing	13	nsubj	_	_
11	"	"	PUNCT	''	_	10	punct	_	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	_	_
13	American	American	ADJ	JJ	Degree=Pos	5	parataxis	_	_
14	for	for	ADP	IN	_	15	case	_	_
15	autumn	autumn	NOUN	NN	Number=Sing	13	obl	_	_
16	)	)	PUNCT	-RRB-	_	13	punct	_	Agree=R6-punct-agree|Haiku=5:punct
17	:	:	PUNCT	:	_	24	punct	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	spring	spring	NOUN	NN	Number=Sing	20	compound	_	_
20	night	night	NOUN	NN	Number=Sing	25	nsubj	_	_
21	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	25	cop	_	_
22	only	only	ADV	RB	_	23	advmod	_	_
23	23	23	NUM	CD	NumForm=Digit|NumType=Card	24	nummod	_	_
24	hours	hour	NOUN	NNS	Number=Plur	25	obl:unmarked	_	_
25	long	long	ADJ	JJ	Degree=Pos	5	parataxis	_	_
26	,	,	PUNCT	,	_	29	punct	_	_
27	the	the	DET	DT	Definite=Def|PronType=Art	29	det	_	_
28	autumn	autumn	NOUN	NN	Number=Sing	29	compound	_	_
29	night	night	NOUN	NN	Number=Sing	5	obl:unmarked	_	_
30	25	25	NUM	CD	NumForm=Digit|NumType=Card	29	flat	_	_
31	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: changed voice=narrator

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fall back** *in a quote* | infinitive | Spring |  |  |  | night |  | vn long-32.2 «NP V S\_INF»: agent=Pivot clause=Theme |
| 2 | **is** | present | fall |  |  |  | autumn | american *property* | tree rules |
| 3 | **is** | present | the spring night |  |  |  | hour | long *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.

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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:121-date-line-and-summer-time.lesson:6`.

**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): R6-punct-agree ×1, 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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