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1. Did you get something on what they were experimenting in the facility?
2. Did you get something about what they were experimenting in the facility?

3. Did you get something from what they were experimenting in the facility?
4. Did you get something on the secret information?
5. Did you get something about the secret information?

6. Did you get something from the secret information?

I think they are all natural and grammatically correct, but 1 and 4 seems to sound most proper to use in this context.

Comments  

Sorry users! There are mistakes in 1 2 3 sentences. I didn't add "on" as in "experimenting on"

So the new question is

1. Did you get something on what they were experimenting on in the facility?
2. Did you get something about what they were experimenting on in the facility?

3. Did you get something from what they were experimenting on in the facility?
4. Did you get something on the secret information?
5. Did you get something about the secret information?

6. Did you get something from the secret information?

I think they are all natural and grammatically correct, but 1 and 4 seems to sound most proper to use in this context.