Among the two statements
$(\mathrm{S} 1) \sim(\mathrm{p} \Rightarrow \mathrm{q}) \wedge(\mathrm{q} \wedge(\sim \mathrm{q}))$ is a contradiction and
$
(S 2) \sim(p \wedge q) \vee((\sim p) \wedge q) \vee
$
$(p \wedge(\sim q)) \vee((\sim p) \wedge(\sim q))$ is a tautology
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