A roar can be obnoxious.Logical formLearned from2 sentences. A male may imitate a roar.Logical formLearned from2 sentences. A roar can be periodic.Logical formLearned from2 sentences. A roar may pertain-to a (jet engine).Logical formLearned from2 sentences. Some roars can be constituted-of-or-filled-with laughter.Logical formLearned from2 sentences. An elected-representative may joke to roars.Logical formLearned from2 sentences. A roar can be positive.Logical formLearned from2 sentences. Flashes can be in a roar.Logical formLearned from2 sentences. A roar may pertain-to an internal-combustion engine.Logical formLearned from2 sentences. A US-president may say to a roar.Logical formLearned from2 sentences. (Traffic jams) may feature a roar of motorcycles.Logical formLearned from2 sentences. A roar can be ambient.Logical formLearned from2 sentences. Throngs of protesters may erupt into a roar.Logical formLearned from2 sentences. A roar of engines may cut_through a silence of a cemetery.Logical formLearned from2 sentences. A roar can be percussive.Logical formLearned from2 sentences.