Question 1 The language L(G) where G = ( {S, A}, [0,1}, {(S, 1A), (S, OS), (A, 11) }, S) is a finite language True False Question 2 We can always construct the syntax tree for a sentence from a derivation for the sentenc

Provide the rules for context-free grammars that generate the following languages. L4 = {w ∈ {a, b, c}  | |w| ≥ 3, |w| is odd, and the first symbol, middle symbol and last symbol of w are all different }

NAT Lang processing:  Please explain in detail    Consider a CFG representing a phrase structure grammar for a natural language such as English, including the following rule (the period is part of the rule): S -> NP VP .   In this rule, S, NP, and VP are non-terminal symbols, but we will assume that the period is a terminal symbol specifically representing a period (as opposed to some other end-of-sentence marker). So, we can interpret this rule as stating that a sentence can have the form of a noun phrase followed by a verb phrase followed by a period. (To implement a parser for grammars with rules like this, the tokenizer would have to treat periods as separate tokens.)   Assume that you need to convert this grammar to Chomsky normal form (CNF), perhaps with the CKY parsing algorithm in mind. Using the procedure discussed in class, show the rules that might result from the conversion.

Construct a Chomsky normal form grammar for L(G) for the following cfg G: G=({S,B}, {a,b,c,d}, {S→Sb|Ba, B→BdBc|S|ɛ}, S). Note: You must first remove all & and all unit productions.