A game can be with a concussion.Logical formLearned from28 sentences. A person may recover from a concussion.Logical formLearned from28 sentences. A male may receive a concussion.Logical formLearned from27 sentences. A concussion may keep a male.Logical formLearned from27 sentences. Concussions can be serious.Logical formLearned from26 sentences. A concussion can be in a game.Logical formLearned from26 sentences. A person may give him-or-herself a concussion.Logical formLearned from25 sentences. A concussion can be in a collision.Logical formLearned from25 sentences. A person may suffer concussion.Logical formLearned from25 sentences. A result may pertain-to a concussion.Logical formLearned from24 sentences. A concussion can be against a US-city.Logical formLearned from24 sentences. A male may return from a concussion.Logical formLearned from24 sentences. A committee can be on concussions.Logical formLearned from24 sentences. A program may study effects of concussions.Logical formLearned from23 sentences. A male may give a person a concussion.Logical formLearned from23 sentences.