answer: there is one person in the video
question: how many people are in the video ?
answer: in the hallway but irrelevant
question: where is he in the house ?
answer: no he was standing there throughtout the video
question: did he come from somewhere else ?
answer: the man is using his phone as he stands
question: what is he doing in the room ?
answer: no , he does not speak to anyone
question: does he talk to someone ?
answer: the man is looking at a cup of coffee on his phone
question: what does he do to the phone ?
answer: it makes the man happy
question: why do you think he looks at a cup of coffee on his phone ?