A (fire engine) may roar.Logical formLearned from2 sentences. A female may roar at a person.Logical formLearned from2 sentences. A person may be roared with laughter.Logical formLearned from2 sentences. A thunder may roar in the sky.Logical formLearned from2 sentences. A tide may roar.Logical formLearned from2 sentences. A chainsaw may roar to life.Logical formLearned from2 sentences. Tornadoes may roar.Logical formLearned from2 sentences. Voices may roar.Logical formLearned from2 sentences. A throng may roar approval.Logical formLearned from2 sentences. A crowd may roar for some minutes.Logical formLearned from2 sentences. A heater may roar.Logical formLearned from2 sentences. A pickup may roar.Logical formLearned from2 sentences. A stadium may be roared.Logical formLearned from2 sentences. A (storm system) may roar.Logical formLearned from2 sentences. A (stadium crowd) may roar.Logical formLearned from2 sentences.