Table: episodes_38
Columns: series_no
season_no
title
directed_by
written_by
original_air_date
production_code

Question: how many people wrote the episode directed by rob schrab?
SQL: SELECT COUNT("written_by") FROM episodes_38 WHERE "directed_by" = 'Rob Schrab'

Question: name the title of the episode with production code 201
SQL: SELECT "title" FROM episodes_38 WHERE "production_code" = 201