1. General Knowledge What derivation does a bottom-up LR(1) parser construct? a. b. What derivation does a top-down LL(1) parser construct? Define ambiguity in a context-free grammar. Give an example of an ambiguous context- free grammar. c. d. Which is smaller: a parse tree or an abstract syntax tree? 2. Comparisons In each part of this question, you are given two terms. Briefly define each term, and then explain the distinction or difference between them. “Briefly” means a
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