A vector can be artificial.Logical formLearned from4 sentences. Artificial lighting may be installed.Logical formLearned from4 sentences. A closed ecological system can be artificial.Logical formLearned from4 sentences. Creeks can be artificial.Logical formLearned from4 sentences. A derivation can be artificial.Logical formLearned from4 sentences. Diversions can be artificial.Logical formLearned from4 sentences. Some form can be constituted-of-or-filled-with artificial lighting.Logical formLearned from4 sentences. An artificial intelligence may be created by a male.Logical formLearned from4 sentences. A (track luge) can be artificial.Logical formLearned from4 sentences. Swarms can be artificial.Logical formLearned from4 sentences. A riverbed can be artificial.Logical formLearned from4 sentences. An artificial island can be in the world.Logical formLearned from4 sentences. A need can be for artificial fertilizers.Logical formLearned from4 sentences. (Speed skating tracks) can be artificial.Logical formLearned from4 sentences. A tie can be artificial.Logical formLearned from4 sentences.