The detective had to discover the truth, he started by searching and sifting through the lies to what?\nOptions:\n- ask questions\n- lie\n- search for\n- find facts\n- wonder
Let's think step by step.
find facts
Find Facts is to determine the facts relevant to decide a controversy.

The detective had to discover the truth, he started by searching and sifting through the lies to find facts.

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The answer: find facts