Consider the sentence “Someone walked slowly to the supermarket” and a lexicon c
ID: 3767203 • Letter: C
Question
Consider the sentence “Someone walked slowly to the supermarket” and a lexicon consisting of the following words:
Pronoun -> someone, Verb -> walked, Adv -> slowly, Prep -> to, Article -> the, Noun -> supermarket. Which of the following grammars combined with the lexicon, generates the given sentence? Show the corresponding parse tree(s)
( A) (B) (C)
S -> NP VP S-> NP VP S -> NP VP
NP - > Pronoun NP - > Pronoun NP - > Pronoun
NP -> Article Noun NP -> Noun NP -> Article NP
VP -> VP PP NP -> Article NP VP -> Verb Adv
VP -> VP Adv Adv VP -> Verb Vmod Adv -> Adv Adv
VP -> Verb Vmod -> Adv Vmod Adv -> PP
PP -> Prep NP Vmod -> Adv PP -> Prep NP
NP -> Noun Adv -> PP Np -> Noun
Pp -> Prep NP
Explanation / Answer
The given sentence is “Someone walked slowly to the supermarket”
Pronoun -> someone,
Verb -> walked,
Adv -> slowly,
Prep -> to,
Article -> the,
Noun -> supermarket.
Thus, Someone walked slowly to the supermarket” = Pronoun Verb Adv Prep Article Noun
Pronoun Verb Adv Prep Article Noun
The grammar (B) is combined with the lexicon and generates the given sentence.
S->NP VP
NP->Pronoun
NP->Noun
NP->Article NP
VP-> Verb Vmod
Vmod-> Adv Vmod
Vmod-> Adv
Adv-> PP
PP-> Prep NP
Generating the given sentence by grammar (b):
S-> NP VP (1)
-> Pronoun VP (2)
-> Pronoun Verb Vmod (5)
-> Pronoun Verb Adv Vmod (6)
-> Pronoun Verb Adv Adv (7)
-> Pronoun Verb Adv PP (8)
-> Pronoun Verb Adv Prep NP (9)
-> Pronoun Verb Adv Prep Article NP (4)
-> Pronoun Verb Adv Prep Article Noun (3)
The grammar (C) is combined with the lexicon and generates the given sentence.
S->NP VP
NP->Pronoun
NP->Article NP
VP-> Verb Adv
Adv-> Adv Adv
Adv-> PP
PP-> Prep NP
NP->Noun
Generating the given sentence by grammar (C):
S-> NP VP (1)
->Pronoun VP (2)
-> Pronoun Verb Adv (4)
-> Pronoun Verb Adv Adv (5)
-> Pronoun Verb Adv PP (6)
-> Pronoun Verb Adv Prep NP (7)
-> Pronoun Verb Adv Prep Article NP (3)
-> Pronoun Verb Adv Prep Article Noun (8)