Concussions may pertain-to a person.Logical formLearned from18 sentences. An explosion may undergo a concussion.Logical formLearned from18 sentences. A concussion can be in a half.Logical formLearned from18 sentences. A concussion can be severe.Logical formLearned from18 sentences. A male may sustain some concussion.Logical formLearned from18 sentences. A concussion can be in some weeks.Logical formLearned from18 sentences. Concussions may undergo handling.Logical formLearned from17 sentences. Some concussions can be in some months.Logical formLearned from17 sentences. Concussions may undergo a treatment.Logical formLearned from17 sentences. A concussion can be after a collision.Logical formLearned from17 sentences. A concussion can be from a blast.Logical formLearned from17 sentences. Explosions may send concussions.Logical formLearned from17 sentences. A person may have a history of concussions.Logical formLearned from17 sentences. Symptoms can be constituted-of-or-filled-with concussion.Logical formLearned from16 sentences. A male may be treated for a concussion.Logical formLearned from16 sentences.