Collisions can be between trains.Logical formLearned from18 sentences. Collisions may undergo a prevention.Logical formLearned from18 sentences. Cosmic rays may produce (particle collisions).Logical formLearned from18 sentences. A country may undergo a collision.Logical formLearned from18 sentences. Achievements may undergo a collision.Logical formLearned from18 sentences. A pilot may cause a collision.Logical formLearned from18 sentences. A collision may strain relations.Logical formLearned from18 sentences. A collision can be with a teammate.Logical formLearned from18 sentences. A collision can be with some car.Logical formLearned from18 sentences. Forces may undergo a collision.Logical formLearned from18 sentences. An asteroid can be on a (collision course).Logical formLearned from18 sentences. A stretcher can be after a collision.Logical formLearned from18 sentences. A (spy plane) may be detained after a collision.Logical formLearned from18 sentences. A pilot of a jet may be lost in a collision.Logical formLearned from18 sentences. A plane may initiate a collision.Logical formLearned from18 sentences.