Table: t_1975_f1_season_2
Columns: entrant
constructor
chassis
engine
tyre
driver
rounds

Question: Name the tyre for hb bewaking team ensign with rounds of 13
SQL: SELECT "tyre" FROM t_1975_f1_season_2 WHERE "entrant" = 'hb bewaking team ensign' AND "rounds" = '13'

Question: Name the round for engine of ford cosworth dfv 3.0 v8 with chassis fo 751
SQL: SELECT "rounds" FROM t_1975_f1_season_2 WHERE "engine" = 'ford cosworth dfv 3.0 v8' AND "chassis" = '751'

Question: Name the chassis for tyre of g and carlos reutemann
SQL: SELECT "chassis" FROM t_1975_f1_season_2 WHERE "tyre" = 'g' AND "driver" = 'carlos reutemann'

Question: Name the entrant for chassis of gh1
SQL: SELECT "entrant" FROM t_1975_f1_season_2 WHERE "chassis" = 'gh1'

Question: Name the rounds for stanley brm
SQL: SELECT "rounds" FROM t_1975_f1_season_2 WHERE "entrant" = 'stanley brm'