user: ### NOW ANSWER:
Question: In which year is Nerida Gregory listed as the loser?
Columns: ['Year', 'Grand Slam', 'Round', 'Winner', 'Loser']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1969.0, 'Australian Open', 'First round', 'Margaret Court', 'Judith Gohn']
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Loser" = 'Nerida Gregory';