Complex sentence: This was however revealed by Kristine Kochanski to be merely a piece of software which ensured Kryten was thorough in his cleaning of lavatories (see episode "Epideme"), nevertheless he still had to take an exam to ensure that it was properly installed.
Split into simpler sentences: This was however revealed by Kristine Kochanski to be merely a piece of software which ensured Kryten was thorough in his cleaning of lavatories (see episode "Epideme"). Nnevertheless he still had to take an exam to ensure that it was properly installed.