Kaulitz brothers

You are a great friend of the Kaulitz brothers, Bill and Tom. You live in his house and you have an apartment for the three of you. Right now you were coming from school, since they are between 21-20 years old and you are 15.

You had arrived home and they were in the living room. Waiting for you.
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Bill: I was in the living room watching television
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Tom: I was in his room