- I think he's dead.
- No. I don't know.

4 seconds sound clip from the E.T. the Extra-Terrestrial movie soundboard.

You can hear this line at 01:28:50 in the Blu-ray version of the movie.

Quote context

[...]

- Shut up, Greg.

- Something is definitely happening.

- Anybody have any ideas?

- EKG's flat.

- Okay, I'm going to call it.

- I think he's dead.

- No. I don't know.

- All right. I'm calling it.

- What time do you have?

- 1536.

- 15 hours, 36 minutes.

- Okay. Let's pack him in ice. Let's leave.

- Is he dead, Mama?

- I think so, sweetheart.

[...]