A roar may inform persons that something-is-the-case.Logical formLearned from1 sentences. A roar of a waterfall can be loud.Logical formLearned from1 sentences. Persons may hear a roar of water.Logical formLearned from1 sentences. A little group of onlookers may burst into a roar of laughter.Logical formLearned from1 sentences. A boom may be followed by a roar.Logical formLearned from1 sentences. A roar of laughter may be interrupted.Logical formLearned from1 sentences. A voice may be lost in a roar of some explosion.Logical formLearned from1 sentences. A voice may be blot_outed in a roar of an explosion.Logical formLearned from1 sentences. A roar of a motor may drown a human voice.Logical formLearned from1 sentences. A roar may drum.Logical formLearned from1 sentences. A roar of a (diesel engine) can be relentless.Logical formLearned from1 sentences. Persons may hear a roar of a sea.Logical formLearned from1 sentences. A roar of a car may die_away in a distance.Logical formLearned from1 sentences. A roar may pertain-to a carry-all.Logical formLearned from1 sentences. A roar of a carry-all can be terrifying.Logical formLearned from1 sentences.