A family can be constituted-of-or-filled-with closed sets.Logical formLearned from5 sentences. (Branch lines) can be closed.Logical formLearned from5 sentences. Entries can be closed.Logical formLearned from5 sentences. (Fire stations) can be closed.Logical formLearned from5 sentences. A (time loop) can be closed.Logical formLearned from5 sentences. A proportional representation can be closed.Logical formLearned from5 sentences. A region can be closed.Logical formLearned from5 sentences. A sawmill can be closed.Logical formLearned from5 sentences. A democratic primary can be closed.Logical formLearned from5 sentences. A flock can be closed.Logical formLearned from5 sentences. A (dance position) can be closed.Logical formLearned from5 sentences. A cast can be closed.Logical formLearned from5 sentences. A (representation list) can be closed.Logical formLearned from5 sentences. A closed surface can be oriented.Logical formLearned from5 sentences. Pens can be closed.Logical formLearned from5 sentences.