Table: tv_episode_data_87
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
u_s_viewers_millions

Question: What was the name of the episode directed by Jessica Yu?
SQL: SELECT "title" FROM tv_episode_data_87 WHERE "directed_by" = 'Jessica Yu'

Question: who directed the episode written by Shonda Rhimes?
SQL: SELECT "directed_by" FROM tv_episode_data_87 WHERE "written_by" = 'Shonda Rhimes'

Question: How many episodes in the series are also episode 18 in the season?
SQL: SELECT COUNT("no_in_series") FROM tv_episode_data_87 WHERE "no_in_season" = 18