Counterclaim: Refers to a counterclaim made by a defendant to a judicial authority in a civil lawsuit that has been initiated in order to revoke or invalidate the original claim. The defendant in the counterclaim is the plaintiff of this claim, and the counterclaim shall be made no later than the judgment of this claim. The counterclaim can only be filed with the trial authority hearing the complaint, and the counterclaim and the subject matter or cause of action of the complaint should be related. According to the definition of appeal, which of the following situations is a counterclaim? (). ["The two people resorted to the law because of a civil dispute, the court made a first-instance judgment, the defendant won the case, and the plaintiff disagreed, so they filed a lawsuit with the higher-level people's court.", 'An unemployed traveller once went to court for burglary. However, when he entered the room, he discovered that the owner had a major suspicion of homicide, so he sued the owner for murder.', 'A factory manager was discovered by the accountant for embezzlement of public funds, fearing that he would sue, so the wicked sue first and prosecutes the accountant for crimes such as malfeasance.', "There was an economic dispute between the two companies in Guangdong. The seller sued the seller because the buyer refused to perform the contract and delivered the entire loan. During the trial, the buyer considered that the seller's goods were of poor quality and the buyer had a good reason, so he sued the defendant to Discuss."]