The english sentence needs a question mark
Thank you! It was driving me crazy.
So it's missing question mark which would also change it to apakah ya?
The punctiation in the Indonesian sentence is lacking, so I have reported it.
Hints suggested for "mesin":
The word "machines" is lacking.
After two years they have still not added the question mark. Great work, Duolingo.
Engine means mesin pencarian.
Mechine is mesin.
Internal combustion engine, car engine, heat engine, fire engine.