Homework for Philosophy 270, Fall 2012

(i)

Construct a derivation to show that the following claim of entailment does not hold, and confirm a counterexample that lurks in an open gap:

A ∧ B, (C ∧ D) ∧ E ⊨ D ∧ (C ∧ F)

(ii)

Analyze the following sentence, presenting the result in symbolic notation and also in English notation. Remember that the final unanalyzed components should be complete sentences without pronominal cross-references from one to another, and try to capture any grouping in the English.

Bill called Ann, and she called his father and also his mother.