Imaginary defence: Refers to the fact that there is no ongoing illegal infringement objectively, and the perpetrator mistakenly believes that illegal infringement is taking place, and has justified the imaginary "infringer". Which of the following are not imaginary defences? ['Someone vaguely found someone hiding under the window, thinking it was a thief stealing something, and wounding it with a stick, but found that it was a child playing hide-and-seek.', 'Someone walks on the street and finds that the previous one is a corrupt criminal in the General Public Security Bureau, so he immediately catches him but finds that he has identified the wrong person.', 'The villager Li was very annoyed by the continuous theft. One night, he found that someone quietly walked into his yard and hit him, but found that it was his son who was late.', 'Someone rides home late at night, and suddenly a person appears on the roadside. He thought it was robbing, and then beat the person. He found that he was a middle school student who wanted to make fun of himself.']