--- title: A cat's eyes seem to glow in the dark because a shiny layer at the b… — Hidden senses: magnetic birds and turtles, ultra… · tree and pragmatics description: A cat's eyes seem to glow in the dark because a shiny layer at the back of the eye reflects light that comes in; no eye makes its own light. Who acts: eyes, shiny layer, light, eye. A sentence of the lesson «Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whiskers an --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/13/) [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/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [Hidden senses: magnetic birds and turt…](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/) / 13 # Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whiskers and lateral lines, sentence 13 A cat's eyes seem to glow in the dark because a shiny layer at the back of the eye reflects light that comes in; no eye makes its own light. **Who acts:** eyes, shiny layer, light, eye, layer · **What happens:** seem, glow, reflect, come in, make, light · **To what, where:** dark, light, own light This is a sentence of the lesson «Hidden senses: magnetic birds and turtles, ultraviolet bees, heat-seeing snakes, whiskers and lateral lines» of the biology 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 (eyes, shiny layer, light, eye), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:biology:232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.lesson:13 # text = A cat's eyes seem to glow in the dark because a shiny layer at the back of the eye reflects light that comes in; no eye makes its own light. # source = school lesson (ours) # course = biology # lesson = 232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.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): R7-rel-agree ×2 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 cat cat NOUN NN Number=Sing 4 nmod:poss _ _ 3 's 's PART POS _ 2 case _ _ 4 eyes eye NOUN NNS Number=Plur 5 nsubj _ _ 5 seem seem VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 6 to to PART TO _ 7 mark _ _ 7 glow glow VERB VB VerbForm=Inf 5 xcomp _ _ 8 in in ADP IN _ 10 case _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ _ 10 dark dark NOUN NN Number=Sing 7 obl _ _ 11 because because SCONJ IN _ 21 mark _ _ 12 a a DET DT Definite=Ind|PronType=Art 14 det _ _ 13 shiny shiny ADJ JJ Degree=Pos 14 amod _ _ 14 layer layer NOUN NN Number=Sing 21 nsubj _ _ 15 at at ADP IN _ 17 case _ _ 16 the the DET DT Definite=Def|PronType=Art 17 det _ _ 17 back back NOUN NN Number=Sing 14 nmod _ _ 18 of of ADP IN _ 20 case _ _ 19 the the DET DT Definite=Def|PronType=Art 20 det _ _ 20 eye eye NOUN NN Number=Sing 17 nmod _ _ 21 reflects reflect VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ _ 22 light light NOUN NN Number=Sing 21 obj _ _ 23 that that PRON WDT PronType=Rel 24 nsubj _ _ 24 comes come VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 22 acl:relcl _ _ 25 in in ADV RB _ 24 advmod _ Agree=R7-rel-agree|Haiku=24:compound:prt|HaikuPos=ADP:RP:_ 26 ; ; PUNCT : _ 29 punct _ _ 27 no no DET DT PronType=Neg 28 det _ _ 28 eye eye NOUN NN Number=Sing 29 nsubj _ _ 29 makes make VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 5 parataxis _ Agree=R7-rel-agree|Haiku=5:conj 30 its its PRON PRP$ Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs 32 nmod:poss _ _ 31 own own ADJ JJ Degree=Pos 32 amod _ _ 32 light light NOUN NN Number=Sing 29 obj _ _ 33 . . PUNCT . _ 5 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **seem** | present | a cat's eyes | | | | | | vn seem-109-1-1-1 «NP V S\_INF»: agent=Theme clause=Attribute | | 2 | **glow** | to-infinitive | a cat's eyes *not said here* | | | the dark | | | vn light\_emission-43.1 «NP V PP.location»: agent=Theme in dark=Location | | 3 | **reflect** | present | a shiny layer at the back of the eye | light | | | | | tree rules | | 4 | **come in** | present | light | | | | | | vn escape-51.1-1 «NP V»: agent=Theme | | 5 | **make** | present | no eye | layer's own light | | | | | vn build-26.1-1 «NP.asset V NP»: agent=Asset light=Product | | 6 | **light** | | layer | | | | | | nom light «phenomenon transitive»: poss=agent | 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:biology:232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes.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): R7-rel-agree ×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: [Hidden senses: magnetic birds and turt…, 12](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/12/) - next →: [Hidden senses: magnetic birds and turt…, 14](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/14/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/232-hidden-senses-magnetic-birds-ultraviolet-bees-heat-seeing-snakes/)