--- title: Identify the principal reason for which dental floss or an interdent… — Flossing and caring for your teeth · tree and pragmatics description: Identify the principal reason for which dental floss or an interdental brush is employed daily. Exam question 1 of lesson 74 «Flossing and caring for your teeth» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/everyday/74-flossing-and-caring-for-teeth/e1/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Everyday](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/) / [Flossing and caring for your teeth](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/74-flossing-and-caring-for-teeth/) / e1 # Exam question 1 · Flossing and caring for your teeth Identify the principal reason for which dental floss or an interdental brush is employed daily. **Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** you · **What happens:** identify, employ · **To what, where:** principal reason, dental floss This is exam question 1 of lesson 74 «Flossing and caring for your teeth» of the everyday course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/everyday/74-flossing-and-caring-for-teeth/#e1). ## The question {#question} ```conllu # sent_id = question:everyday:74-flossing-and-caring-for-teeth:e1:1 # text = Identify the principal reason for which dental floss or an interdental brush is employed daily. 1 Identify identify VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 2 the the DET DT Definite=Def|PronType=Art 4 det _ _ 3 principal principal ADJ JJ Degree=Pos 4 amod _ _ 4 reason reason NOUN NN Number=Sing 1 obj _ _ 5 for for ADP IN _ 6 case _ _ 6 which which PRON WDT PronType=Rel 14 obl _ _ 7 dental dental ADJ JJ Degree=Pos 8 amod _ _ 8 floss floss NOUN NN Number=Sing 14 nsubj:pass _ _ 9 or or CCONJ CC _ 12 cc _ _ 10 an a DET DT Definite=Ind|PronType=Art 12 det _ _ 11 interdental interdental ADJ JJ Degree=Pos 12 amod _ _ 12 brush brush NOUN NN Number=Sing 8 conj _ _ 13 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 14 aux:pass _ _ 14 employed employ VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 4 acl:relcl _ _ 15 daily daily ADV RB _ 14 advmod _ SpaceAfter=No 16 . . PUNCT . _ 1 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **identify** | imperative | you *not said here* | the principal reason | | | | | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme | | 2 | **employ** | present · passive | | dental floss or a interdental brush | | | | for the principal reason; daily *property* | vn use-105.1 «NP V NP PP.predicate»: subject=Theme for which=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. ## The options {#options} ### Option 1 {#o1} Floss strengthens the roots of the teeth ```conllu # sent_id = question:everyday:74-flossing-and-caring-for-teeth:e1:o1:1 # text = Floss strengthens the roots of the teeth 1 Floss floss NOUN NN Number=Sing 2 nsubj _ _ 2 strengthens strengthen VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 roots root NOUN NNS Number=Plur 2 obj _ _ 5 of of ADP IN _ 7 case _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 teeth tooth NOUN NNS Number=Plur 4 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **strengthen** | present | Floss | the roots of the teeth | | | | | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent root=Patient | ### Option 2 {#o2} Floss whitens the teeth more effectively than brushing ```conllu # sent_id = question:everyday:74-flossing-and-caring-for-teeth:e1:o2:1 # text = Floss whitens the teeth more effectively than brushing 1 Floss floss NOUN NN Number=Sing 2 nsubj _ _ 2 whitens whiten VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 teeth tooth NOUN NNS Number=Plur 2 obj _ _ 5 more more ADV RBR Degree=Cmp 6 advmod _ _ 6 effectively effectively ADV RB _ 2 advmod _ _ 7 than than SCONJ IN _ 8 mark _ _ 8 brushing brush VERB VBG Tense=Pres|VerbForm=Part 6 advcl _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **whiten** | present | Floss | the teeth | | | | effectively *property* | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent tooth=Patient | | 2 | **brush** | gerund | Floss *not said here* | | | | | | vn floss-41.2.1 «NP V»: agent=Agent | ### Option 3 {#o3} Floss replaces the need to brush altogether ```conllu # sent_id = question:everyday:74-flossing-and-caring-for-teeth:e1:o3:1 # text = Floss replaces the need to brush altogether 1 Floss floss NOUN NN Number=Sing 2 nsubj _ _ 2 replaces replace VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 need need NOUN NN Number=Sing 2 obj _ _ 5 to to PART TO _ 6 mark _ _ 6 brush brush VERB VB VerbForm=Inf 2 xcomp _ _ 7 altogether altogether ADV RB _ 6 advmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **replace** | present | Floss | the need | | | | | tree rules | | 2 | **brush** | to-infinitive | Floss *not said here* | | | | | altogether *property* | vn floss-41.2.1 «NP V»: agent=Agent | ### Option 4 · ← Mova's choice · ✓ the right answer {#o4} A toothbrush cannot reach the gaps between the teeth ```conllu # sent_id = question:everyday:74-flossing-and-caring-for-teeth:e1:o4:1 # text = A toothbrush cannot reach the gaps between the teeth 1 A a DET DT Definite=Ind|PronType=Art 2 det _ _ 2 toothbrush toothbrush NOUN NN Number=Sing 5 nsubj _ _ 3 can can AUX MD VerbForm=Fin 5 aux _ SpaceAfter=No 4 not not PART RB Polarity=Neg 5 advmod _ _ 5 reach reach VERB VB VerbForm=Inf 0 root _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 gaps gap NOUN NNS Number=Plur 5 obj _ _ 8 between between ADP IN _ 10 case _ _ 9 the the DET DT Definite=Def|PronType=Art 10 det _ _ 10 teeth tooth NOUN NNS Number=Plur 7 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **not** **reach** | can | a toothbrush | the gaps | | | | between the teeth | vn body\_motion-49.2-1-1 «NP V NP ADV»: agent=Agent gap=Theme | **Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License. - ← previous: [Flossing and caring for your teeth, test 19](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/74-flossing-and-caring-for-teeth/t19/) - next →: [Flossing and caring for your teeth, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/74-flossing-and-caring-for-teeth/e2/) - ↑ back to [Flossing and caring for your teeth](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/74-flossing-and-caring-for-teeth/)