If jack is at the park, then he is flying a kite.
\Hypothesis: If jack is at the park
\The hypothesis is true.
\Conclusion: then he is flying a kite.
\The conclusion is not true.
\The statement is false.
\Counterexample:
\The jack is at the park, he is playing game or he will be do some works.
\The statement is false.
\The jack is at the park, he is playing game or he will be do some works.