--- title: At a level crossing, never cross when the lights flash or the barrie… — Road and railway safety · tree and pragmatics description: At a level crossing, never cross when the lights flash or the barriers are down; wait until they go up, because a second train may come, and a fast train can take more than a kilometre to stop. Who acts: you, lights, second train, fast train. A sentence of the lesson «Road and railway safety» of the --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/27-road-and-railway-safety/12/) [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/) / [Road and railway safety](https://md.mova.elamur.ai/free/en/corpora/school/technology/27-road-and-railway-safety/) / 12 # Road and railway safety, sentence 12 At a level crossing, never cross when the lights flash or the barriers are down; wait until they go up, because a second train may come, and a fast train can take more than a kilometre to stop. **Who acts:** you, lights, second train, fast train · **What happens:** not cross, flash, be, wait, go up, come · **To what, where:** level crossing, kilometre This is a sentence of the lesson «Road and railway safety» 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 (you, lights, second train, fast train), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:027-road-and-railway-safety.lesson:12 # text = At a level crossing, never cross when the lights flash or the barriers are down; wait until they go up, because a second train may come, and a fast train can take more than a kilometre to stop. # source = school lesson (ours) # course = technology # lesson = 027-road-and-railway-safety.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, R7-rel-agree ×3 1 At at ADP IN _ 4 case _ _ 2 a a DET DT Definite=Ind|PronType=Art 4 det _ _ 3 level level NOUN NN Number=Sing 4 compound _ _ 4 crossing crossing NOUN NN Number=Sing 7 obl _ _ 5 , , PUNCT , _ 4 punct _ _ 6 never never ADV RB PronType=Neg 7 advmod _ _ 7 cross cross VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 8 when when ADV WRB PronType=Int 16 advmod _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ Agree=R5-strong|Haiku=11:det 10 lights light NOUN NNS Number=Plur 11 nsubj _ Agree=R7-rel-agree|Haiku=11:compound 11 flash flash VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ Agree=R5-strong|Haiku=16:nsubj|HaikuPos=NOUN:NN:Number=Sing 12 or or CCONJ CC _ 14 cc _ _ 13 the the DET DT Definite=Def|PronType=Art 14 det _ _ 14 barriers barrier NOUN NNS Number=Plur 11 conj _ _ 15 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 16 cop _ _ 16 down down ADV RB _ 7 advmod _ _ 17 ; ; PUNCT , _ 18 punct _ _ 18 wait wait VERB VB Mood=Imp|VerbForm=Fin 7 parataxis _ _ 19 until until SCONJ IN _ 21 mark _ _ 20 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 21 nsubj _ _ 21 go go VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 18 advcl _ _ 22 up up ADV RB _ 21 compound:prt _ Agree=R7-rel-agree|Haiku=21:advmod 23 , , PUNCT , _ 29 punct _ _ 24 because because SCONJ IN _ 29 mark _ _ 25 a a DET DT Definite=Ind|PronType=Art 27 det _ _ 26 second second ADJ JJ Degree=Pos|NumForm=Word|NumType=Ord 27 amod _ _ 27 train train NOUN NN Number=Sing 29 nsubj _ _ 28 may may AUX MD VerbForm=Fin 29 aux _ _ 29 come come VERB VB VerbForm=Inf 18 advcl _ Agree=R7-rel-agree|Haiku=18:conj 30 , , PUNCT , _ 36 punct _ _ 31 and and CCONJ CC _ 36 cc _ _ 32 a a DET DT Definite=Ind|PronType=Art 34 det _ _ 33 fast fast ADJ JJ Degree=Pos 34 amod _ _ 34 train train NOUN NN Number=Sing 36 nsubj _ _ 35 can can AUX MD VerbForm=Fin 36 aux _ _ 36 take take VERB VB VerbForm=Inf 29 conj _ _ 37 more more ADJ JJR Degree=Cmp|ExtPos=ADV 40 advmod _ _ 38 than than ADP IN _ 37 fixed _ _ 39 a a DET DT Definite=Ind|PronType=Art 40 det _ _ 40 kilometre kilometre NOUN NN Number=Sing 36 obj _ _ 41 to to PART TO _ 42 mark _ _ 42 stop stop VERB VB VerbForm=Inf 36 advcl _ _ 43 . . PUNCT . _ 7 punct _ _ ``` ## Pragmatics {#pragmatics} - form: command - act: warn - voice: narrator - polarity: none - teacher: changed form=imp, act=warn | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **not** **cross** | imperative | you *not said here* | | | a level crossing | | | vn contiguous\_location-47.8-1 «NP V»: agent=Theme | | 2 | **flash** | present | the lights | | | | | | vn light\_emission-43.1 «NP V»: agent=Theme | | 3 | **is** | present | | | | | | down *property* | tree rules | | 4 | **wait** | infinitive | | | | | | | vn exist-47.1 «NP V»: agent=Theme | | 5 | **go up** | present | lights *= light* | | | | | | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute | | 6 | **come** | may | a second train | | | | | | vn escape-51.1-1 «NP V»: agent=Theme | | 7 | **take** | can | a fast train | a kilometre | | | | | vn bring-11.3 «NP V NP»: agent=Agent kilometre=Theme | | 8 | **stop** | to-infinitive | a fast train *not said here* | | | | | | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality | 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:027-road-and-railway-safety.lesson:12`. **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, R7-rel-agree ×3. **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: [Road and railway safety, 11](https://md.mova.elamur.ai/free/en/corpora/school/technology/27-road-and-railway-safety/11/) - next →: [Road and railway safety, 13](https://md.mova.elamur.ai/free/en/corpora/school/technology/27-road-and-railway-safety/13/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/27-road-and-railway-safety/)