Question: Who was the gunman in the mass shooting at the Pulse nightclub on June 12, 2016?
Sentence (from "Omar Mateen"): Omar Mir Seddique (November 16, 1986 - June 12, 2016), also known as Omar Mateen, was an American mass murderer who killed 49 people and wounded 58 others in a mass shooting at the Pulse gay nightclub in Orlando, Florida, on June 12, 2016, before he was killed in a shootout with the local police.
Relevant evidence: Yes