The conversation between human and AI assistant.
[|Human|] Given this paragraph about the Mercury Seven. Who did not survive to reach retirement and what was the cause of their death?
[|AI|] Only Gus Grissom did not survive to reach retirement. All others survived past retirement from service. The cause of his death is the Apollo 1 fire.
[|Human|] 
Given this paragraph about the Mercury Seven. Who did not survive to reach retirement and what was the cause of their death?