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If w belongs to L(G), for some CFG, then w has a parse tree, which defines the syntactic structure of w. w could be:

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If w belongs to L(G), for some CFG, then w has a parse tree, which defines the syntactic structure of w. w could be:

(a) program

(b) SQL-query

(c) XML document

(d) All of the mentioned

This question was posed to me in homework.

This interesting question is from The Language of a Grammar, Inferences and Ambiguity topic in chapter Context Free Grammars and Languages of Automata Theory

1 Answer

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Correct choice is (d) All of the mentioned

The best explanation: Parse trees are an alternative representation to derivations and recursive inferences. There can be several parse trees for the same string.

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