Context: CREATE TABLE table_19722436_2 (lmp1_winning_team VARCHAR, gt1_winning_team VARCHAR)
Question: When peter kox roman rusinov is the gt1 of the winning team how many lmp1 winning teams are there?
Answer: SELECT COUNT(lmp1_winning_team) FROM table_19722436_2 WHERE gt1_winning_team = "Peter Kox Roman Rusinov"