Critical condition can be from a collision.Logical formLearned from4 sentences. A head-on collision can be between a microbus.Logical formLearned from4 sentences. A collision can be between a mini-bus.Logical formLearned from4 sentences. A collision may be occurred.Logical formLearned from4 sentences. A collision can be a result of a failure.Logical formLearned from4 sentences. Collisions can be at velocities.Logical formLearned from4 sentences. Evidence may pertain-to a collision.Logical formLearned from4 sentences. A tractor may be involved in a collision.Logical formLearned from4 sentences. Some persons may be killed in a (train collision).Logical formLearned from4 sentences. A collision can be between a destroyer.Logical formLearned from4 sentences. A (ship collision) can be deadly.Logical formLearned from4 sentences. Cause may pertain-to a collision.Logical formLearned from4 sentences. A head-on collision may involve a bus.Logical formLearned from4 sentences. A (ship collision) can be off a coast.Logical formLearned from4 sentences. A collision can be between some military helicopters.Logical formLearned from4 sentences.