Complete the sentence.When the video Blank 1 Вопрос 7 individual systemboxeshazard pedestrians identifies, for example, cardboard Blank 2 Вопрос 7 individual systemboxeshazard pedestrians which could be a fire Blank 3 Вопрос 7 individual systemboxeshazard pedestrians or also blocking the right way of Blank 4 Вопрос 7 individual systemboxeshazard pedestrians , it will immediately notify an Blank 5 Вопрос 7 individual systemboxeshazard pedestrians to clean it up.