---
title: During the winter months, air pollution reached critical levels and… — Santiago · tree and pragmatics
description: During the winter months, air pollution reached critical levels and a layer of smog blanketed the city. Who acts: air pollution, critical levels. A sentence of Wikipedia's «Santiago» with its dependency tree and pragmatics.
---

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# Santiago, sentence 164

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From Wikipedia, [«Santiago»](https://en.wikipedia.org/wiki/Santiago), revision of the 2026-09-01 dump, [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). The trees and pragmatics of these pages, Mova's parse of that text, are CC BY-SA 4.0 too.

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During the winter months, air pollution reached critical levels and a layer of smog blanketed the city.

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**Who acts:** air pollution, critical levels · **What happens:** reach, blanket · **To what, where:** city

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This is a sentence of the English Wikipedia article «Santiago». The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (air pollution, critical levels), what happens, when and where, as Mova's frames read it from the tree.

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**Mova's own parse.** This tree may be wrong. The article's note marks are left out of the parse.

## The tree {#tree}

```conllu
# sent_id = wikipedia:Santiago:164
# text = During the winter months, air pollution reached critical levels and a layer of smog blanketed the city.
1	During	during	ADP	IN	_	4	case	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	winter	winter	NOUN	NN	Number=Sing	4	compound	_	_
4	months	month	NOUN	NNS	Number=Plur	8	obl	_	SpaceAfter=No
5	,	,	PUNCT	,	_	4	punct	_	_
6	air	air	NOUN	NN	Number=Sing	7	compound	_	_
7	pollution	pollution	NOUN	NN	Number=Sing	8	nsubj	_	_
8	reached	reach	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
9	critical	critical	ADJ	JJ	Degree=Pos	10	amod	_	_
10	levels	level	NOUN	NNS	Number=Plur	16	nsubj	_	_
11	and	and	CCONJ	CC	_	13	cc	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
13	layer	layer	NOUN	NN	Number=Sing	10	conj	_	_
14	of	of	ADP	IN	_	15	case	_	_
15	smog	smog	NOUN	NN	Number=Sing	13	nmod	_	_
16	blanketed	blanket	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	8	ccomp	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	city	city	NOUN	NN	Number=Sing	16	obj	_	SpaceAfter=No
19	.	.	PUNCT	.	_	8	punct	_	_
```

## Pragmatics {#pragmatics}

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **reach** | past | air pollution |  |  |  | month |  | tree rules |
| 2 | **blanket** | past | critical levels and a layer of smog | the city |  |  |  |  | vn butter-9.9 «NP V NP.destination»: agent=Agent city=Destination |

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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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**Text:** the English Wikipedia, «Santiago», revision of the 2026-09-01 dump, CC BY-SA 4.0. **Tree:** Mova's own parse, CC BY-SA 4.0 as the text is. **Frames:** Mova's frames reader (`prag`), the article read in order, CC BY-SA 4.0.

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