Explanation: Semantic grammars encode semantic information into a syntactic grammar. 2. What is a top-down parser?
A. Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written
B. Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level constituents until individual pre-terminal symbols are written
C. Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S)
D. Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)
Answer:A
Explanation: Semantic grammars encode semantic information into a syntactic grammar. 2. What is a top-down parser?
A. Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written B. Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level constituents until individual pre-terminal symbols are written C. Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S) D. Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S)
Explanation: A top-down parser begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual pre-terminal symbols are written. 3. Perception involves