question: Against Opponent in the Final Ivan Lendl, on a Surface of clay, with an Outcome of runner-up, where was the Championship?
answer: SELECT championship FROM table_name_89 WHERE outcome = "runner-up" AND surface = "clay" AND opponent_in_the_final = "ivan lendl"
context: CREATE TABLE table_name_89 (championship VARCHAR, opponent_in_the_final VARCHAR, outcome VARCHAR, surface VARCHAR)