Table: tv_episode_data_70
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_millions

Question: How many of the writers had 5.35 viewers?
SQL: SELECT COUNT("written_by") FROM tv_episode_data_70 WHERE "u_s_viewers_millions" = '5.35'