Table: psi_factor_episodes
Columns: series
season
title
directed_by
written_by
original_air_date

Question: Who was the director for the episode in season #50?
SQL: SELECT "directed_by" FROM psi_factor_episodes WHERE "series" = 50

Question: How many directors were there in total for the episode with series #62?
SQL: SELECT COUNT("directed_by") FROM psi_factor_episodes WHERE "series" = 62

Question: What season was the episode titled "Harlequin" in?
SQL: SELECT MAX("season") FROM psi_factor_episodes WHERE "title" = '"Harlequin"'