Question: Was the KGB responsible for Lincoln's assassination?, Answer:No, Description of KGB: Main security agency for the Soviet Union, Fact1: The KGB was formed March 13, 1954., Fact2: Lincoln was assassinated April 15, 1865.
Step1: When was Abraham Lincoln assassinated?, Step2: When was the KGB formed?, Step3: Is #2 before #1?, Wikipedia page for step 1: Abraham Lincoln, Wikipedia page for step 2: KGB, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False