Table: sakumayama
Columns: name
wins
start
duration
defeated_by

Question: Which Start has a Duration of 6 months 2 days?
SQL: SELECT "start" FROM sakumayama WHERE "duration" = '6 months 2 days'

Question: Which duration was defeated by retired?
SQL: SELECT "duration" FROM sakumayama WHERE "defeated_by" = 'retired'

Question: How many wins, on average, were defeated by furuichi?
SQL: SELECT AVG("wins") FROM sakumayama WHERE "defeated_by" = 'furuichi'