He's dead, Baymax.
4 seconds sound clip from the Big Hero 6 movie soundboard.
You can hear this line at 00:39:20 in the Blu-ray version of the movie.
Quote context
[...]
- Tadashi.
- Tadashi was in excellent health.
- With a proper diet and exercise, he should have lived a long life.
- Yeah, he should have. But there was a fire and... Now, he's gone.
[...]