--- title: Street lights switch on at dusk because a light sensor notices the l… — Roads and road signs · tree and pragmatics description: Street lights switch on at dusk because a light sensor notices the light fading; many are now LEDs, and some dim late at night to save energy. Who acts: Street lights, light sensor, light, many. A sentence of the lesson «Roads and road signs» of the technology course of Mova's primary school with it --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/31-roads-and-road-signs/14/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Roads and road signs](https://md.mova.elamur.ai/free/en/corpora/school/technology/31-roads-and-road-signs/) / 14 # Roads and road signs, sentence 14 Street lights switch on at dusk because a light sensor notices the light fading; many are now LEDs, and some dim late at night to save energy. **Who acts:** Street lights, light sensor, light, many, some · **What happens:** switch on, notice, fade, be, dim, save · **To what, where:** light, LEDs, energy This is a sentence of the lesson «Roads and road signs» of the technology 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 (Street lights, light sensor, light, many), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:031-roads-and-road-signs.lesson:14 # text = Street lights switch on at dusk because a light sensor notices the light fading; many are now LEDs, and some dim late at night to save energy. # source = school lesson (ours) # course = technology # lesson = 031-roads-and-road-signs.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): R5-strong ×2 1 Street street NOUN NN Number=Sing 2 compound _ _ 2 lights light NOUN NNS Number=Plur 3 nsubj _ _ 3 switch switch VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 4 on on ADP RP _ 3 compound:prt _ Agree=R5-strong|Haiku=6:case|HaikuPos=ADP:IN:_ 5 at at ADP IN _ 6 case _ _ 6 dusk dusk NOUN NN Number=Sing 3 obl _ _ 7 because because SCONJ IN _ 11 mark _ _ 8 a a DET DT Definite=Ind|PronType=Art 10 det _ Agree=R5-strong|Haiku=9:det 9 light light NOUN NN Number=Sing 10 compound _ _ 10 sensor sensor NOUN NN Number=Sing 11 nsubj _ _ 11 notices notice VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 3 advcl _ _ 12 the the DET DT Definite=Def|PronType=Art 13 det _ _ 13 light light NOUN NN Number=Sing 11 obj _ _ 14 fading fade VERB VBG VerbForm=Ger 13 acl _ _ 15 ; ; PUNCT , _ 19 punct _ _ 16 many many ADJ JJ Degree=Pos 19 nsubj _ _ 17 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 19 cop _ _ 18 now now ADV RB PronType=Dem 19 advmod _ _ 19 LEDs led NOUN NNS Number=Plur 3 parataxis _ _ 20 , , PUNCT , _ 23 punct _ _ 21 and and CCONJ CC _ 23 cc _ _ 22 some some PRON DT PronType=Ind 23 nsubj _ _ 23 dim dim VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 3 conj _ _ 24 late late ADV RB Degree=Pos 23 advmod _ _ 25 at at ADP IN _ 26 case _ _ 26 night night NOUN NN Number=Sing 24 obl _ _ 27 to to PART TO _ 28 mark _ _ 28 save save VERB VB VerbForm=Inf 23 advcl _ _ 29 energy energy NOUN NN Number=Sing 28 obj _ _ 30 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: assert - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **switch on** | present | Street lights | | | | dusk | | vn convert-26.6.2-1-1 «NP V»: agent=Patient | | 2 | **notice** | present | a light sensor | the light | | | | | vn see-30.1-1 «NP V S»: agent=Experiencer light=Stimulus | | 3 | **fade** | gerund | the light *not said here* | | | | | | vn other\_cos-45.4 «NP.patient V»: agent=Patient | | 4 | **is a** | present | many | LEDs | | | now | | tree rules | | 5 | **dim** | present | some | | | | | late *property* | vn other\_cos-45.4 «NP.patient V»: agent=Patient | | 6 | **save** | to-infinitive | some *not said here* | energy | | | | | vn get-13.5.1-1 «NP V NP»: agent=Agent energy=Theme | 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. **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:technology:031-roads-and-road-signs.lesson:14`. **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): R5-strong ×2. **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/). - ← previous: [Roads and road signs, 13](https://md.mova.elamur.ai/free/en/corpora/school/technology/31-roads-and-road-signs/13/) - next →: [Roads and road signs, 16](https://md.mova.elamur.ai/free/en/corpora/school/technology/31-roads-and-road-signs/16/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/31-roads-and-road-signs/)