Engines may roar to life.Logical formLearned from2 sentences. A wildfire may roar through a (mining town).Logical formLearned from2 sentences. Hundreds of persons may roar approval.Logical formLearned from2 sentences. A blast may roar through a mine.Logical formLearned from2 sentences. Bulldozers may roar a surprise.Logical formLearned from2 sentences. (Stock car engines) may roar to life.Logical formLearned from2 sentences. A male may roar from an audience.Logical formLearned from2 sentences. Jets may roar in a missing (man formation).Logical formLearned from2 sentences. A plane may roar into a sky.Logical formLearned from2 sentences. A US-city may roar at a rate.Logical formLearned from2 sentences. A (terrified tiger) may roar.Logical formLearned from2 sentences. A group of supporters may roar with delight.Logical formLearned from2 sentences. A metal may roar.Logical formLearned from2 sentences. Others may roar in approval.Logical formLearned from2 sentences. A rocket may roar into air.Logical formLearned from2 sentences.