user: Question: Which astronaut went on the Apollo 16 mission at the age of 36y 6m 18d to step on the moon?
Columns: ['Name', 'Born', 'Age at first step', 'Mission', 'Lunar EVA dates', 'Service']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Neil Armstrong', 'August 5, 1930', '38y 11m 15d', 'Apollo 11', 'July 21, 1969', 'NASA']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "Mission" = 'Apollo 16' AND "Age at first step" = '36y 6m 18d';