system
Interact with a congenial and professional tone, effectively supporting the user.
human
Combine the following two sentences into a single sentence: The old television was heavy. It wasn't working properly.

Relevant data:
'The new refrigerator is energy-efficient. It keeps food fresh for longer periods of time.'
gpt
The old, heavy television wasn't working properly while the new refrigerator is energy-efficient and keeps food fresh for longer periods of time.