A roar can be constituted-of-or-filled-with disbelief.Logical formLearned from5 sentences. A roar of generators may echo through hills.Logical formLearned from5 sentences. (Stock markets) may open with a roar.Logical formLearned from5 sentences. A roar may pertain-to a hurricane.Logical formLearned from5 sentences. A silence may explode into a roar.Logical formLearned from5 sentences. A roar may be accompanied by (ambulance sirens).Logical formLearned from5 sentences. Some roar may go_up from japanese fans.Logical formLearned from5 sentences. A roar can be constituted-of-or-filled-with floodwaters.Logical formLearned from5 sentences. A roar can be constituted-of-or-filled-with jubilation.Logical formLearned from5 sentences. A male may say to roars of support.Logical formLearned from5 sentences. A year may dawn to a roar of tanks.Logical formLearned from5 sentences. A (forehand volley winner) may bring a roar from some fans.Logical formLearned from5 sentences. A roar may rumble through a stadium.Logical formLearned from5 sentences. A male may be greeted by a roar.Logical formLearned from5 sentences. A performance may bring a roar from some fans.Logical formLearned from5 sentences.