CREATE TABLE table_14934 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

which entrant after 1987 had 12 points and a benetton b188 chassis?
SELECT "Entrant" FROM table_14934 WHERE "Year" > '1987' AND "Chassis" = 'benetton b188' AND "Points" = '12'
SELECT "Entrant" FROM "table_14934" WHERE "Chassis" = 'benetton b188' AND "Points" = '12' AND "Year" > '1987'