The subject matter of the lawsuit refers to a civil legal relationship or right that the disputes of the parties require the people's court to resolve through trial. According to the above definitions, which of the following is subject matter? ['A 1,000 yuan loan between the original and the defendant.', 'The reputation that occurred between the defendants was harmed by defamation.', 'The relationship between the prosecution and the prosecution between the original and the defendants.', 'The robbery between the plaintiff and the defendant, and the victim relationship.']