If there are more than one leftparse tree (derivation tree) fora given string in a languagegenerated by the Context FreeGrammar, G, then the grammarG is the [ans] grammar.

Approach to solving the question: Detailed explanation: Context-Free Grammar (CFG):A CFG is a set of…

Answered: If there are more than one left parse…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Similar questions

Explain Parsing with Context-Free Grammars?
language L of all strings of symbols from the alphabet ∑ = {a,b,c} where each a is followed by b, and c only appears in pairs. Provide a regular expression and a grammar (regular grammar or context-free grammar) corresponding to L
Problem #6: Show that the following grammars are ambiguous by demonstrating two different parse trees and two different left-most derivations for the same terminal string in each case. Also for each case, find an equivalent unambiguous grammar: c) S-A B A-aAb ab B-abB c
Given the grammar below, construct parse trees for the strings given: A ⇒ A + B | B B BXC | C C (A) | a (i) a (ii) axa (iii) a + a + a (iv) ((a))
Find a regular grammar that generates the language L ((aaab*ab)*).
QUESTION 4. rules: 1. 2. Let G= ({S}, {(,)), P, S) be a CFG, where P contains the following S→SSI(S)Se List three different strings in L(G). What is the language L(G)? (You may either give its name or characterize the strings in it.) 3. Show that the grammar G is ambiguous by constructing two different parse trees for some member of L(G). Can you revise the grammar G to make it unambiguous?
The set of all syntactically valid strings representing regular expressions is A. a regular language, because a regular expression can describe this language B. a context-free language and it can be generated by a context-free grammar but not by any regular grammar O C. a context-sensitive language but not by any context-free grammar
How to write a context-free grammar for the set of strings over the alphabet {a, b} where each stringhas odd length and the middle character is an a. bbaaa and abaabba are strings but aaaa and abbba are not.

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If there are more than one left parse tree (derivation tree) for a given string in a language generated by the Context Free Grammar, G, then the grammar G is the [ans] grammar.