Examples of parabolic objects at high altitude

Case: One day in July 2007, Miss Wang, who lives in a city, fell from the sky and an object hit her on the head. Although 122 was rescued in time and the police dispatched police to investigate in time, Miss Wang died of her injuries in the early morning of the next day. The police found out the following facts: the street is located in a prosperous section of the city, and there are 19 households living upstairs, of which 1-3 floor is professional clothes, and 2-3 floors are warehouses. Ms. Wang was killed by half a brick. The police can't find out which floor residents have committed parabolic behavior. Now Miss Wang's husband, Mr. Li, thinks that there are 19 households in the street where Miss Wang passes, and she should be responsible for Miss Wang's death. So he filed a lawsuit with the court and sued 19 families in the dock. Three users think that it belongs to 1 to the third floor, and it is impossible to cause Miss Wang's death by throwing objects at high altitude. Other 16 households think that Mr. Li's prosecution is unreasonable, and it is unreasonable to take 16 households to court without knowing the defendant. At the trial stage, there was a heated debate about whether Mr. Li was required to give evidence and whether 19 households were responsible. After the first trial, it was decided that 19 households did not provide evidence and did not do any harm, which was the same as tort liability. Decision 19 households bear joint and several compensation of 654.38+10,000 yuan claimed by Mr. Li. The current 19 households refused to accept the appeal.