Table schema:
CREATE TABLE table_name_66 (share_of_seats VARCHAR, general_election VARCHAR, seats VARCHAR, name VARCHAR)

Question: Which Share of seats has Seats smaller than 52, and a Name of sdp–liberal alliance, and a General election of 1983?
SQL: SELECT share_of_seats FROM table_name_66 WHERE seats < 52 AND name = "sdp–liberal alliance" AND general_election = 1983