A person may sit_up on knees.Logical formLearned from20 sentences. Knees may be wobbled.Logical formLearned from20 sentences. A male may rub a knee.Logical formLearned from20 sentences. A male may touch a knee.Logical formLearned from20 sentences. A person may rebuilt a knee.Logical formLearned from20 sentences. Effects may pertain-to a (knee injury).Logical formLearned from20 sentences. A retirement can be due to a (knee injury).Logical formLearned from20 sentences. A knee may pertain-to a boy.Logical formLearned from20 sentences. A person may pull knees.Logical formLearned from20 sentences. A sleeve can be on a knee.Logical formLearned from20 sentences. A person may get_down on a knee.Logical formLearned from20 sentences. (Knee length pants) can be beige.Logical formLearned from20 sentences. A side may pertain-to knees.Logical formLearned from20 sentences. A banjo can be on a knee.Logical formLearned from20 sentences. A male may hug knees.Logical formLearned from20 sentences.