You know, it just hit me: either side can file a lawsuit over a contract. So "plaintiff" and "defense" are not deterministic in terms of who wrote the contract

You know, it just hit me: either side can file a lawsuit over a contract. So "plaintiff" and "defense" are not deterministic in terms of who wrote the contract and who agreed to it. How can an AI that is trained only on court transcripts make any inferences on what is good for which party?