answer: it starts with a boy holding a cup walking up the stairs .
question: hello . i see a person on the steps . how does the video begin ?
answer: there 's a sneaker and a vacuum cleaner on the stairs .
question: is there anything else on the stairs ?
answer: he trips over the sneaker so he puts the cup of water down .
question: what does he do with the cup of water ?
answer: he turns on the vacuum and briefly vacuums the stairs .
question: what does he do after he puts the cup down ?
answer: no . it 's hard to see exactly , but it looks like he vacuums the top two steps .
question: does he vacuum all of the stairs ?
answer: he picks his glass back up and walks back down the stairs .
question: what does he do after he vacuums the top 2 steps ?