Trains may leave.Logical formLearned from38 sentences. Persons may hop on a train.Logical formLearned from38 sentences. A (freight train) may collide head-on.Logical formLearned from38 sentences. Attacks can be on trains.Logical formLearned from38 sentences. A (train bombing) can be deadly.Logical formLearned from38 sentences. A (train trip) may pertain-to a US-president.Logical formLearned from38 sentences. A male may move a train.Logical formLearned from38 sentences. A train can be damaged.Logical formLearned from38 sentences. A train can be between a US-city.Logical formLearned from38 sentences. A person may use a train.Logical formLearned from38 sentences. (Train bombers) may pertain-to a world-city.Logical formLearned from38 sentences. A (train journey) may pertain-to a male.Logical formLearned from38 sentences. An express train can be packed.Logical formLearned from38 sentences. A person may see trains.Logical formLearned from38 sentences. Bombings can be on (commuter trains).Logical formLearned from38 sentences.