CREATE TABLE table_2231241_1 (election VARCHAR2, seat_no_1 VARCHAR2, seat_no_5 VARCHAR2)

which election had seat no 1 filled by jacques lachapelle but seat no 5 was filled by g. sanscartier
SELECT election FROM table_2231241_1 WHERE seat_no_1 = "Jacques Lachapelle" AND seat_no_5 = "G. Sanscartier"
SELECT "election" FROM "table_2231241_1" WHERE "G. Sanscartier" = "seat_no_5" AND "Jacques Lachapelle" = "seat_no_1"