(Train services) can be international.Logical formLearned from23 sentences. Trains may use a tunnel.Logical formLearned from23 sentences. A (train frequency) can be minutes.Logical formLearned from23 sentences. Platform may be used for trains.Logical formLearned from23 sentences. A train may be set.Logical formLearned from23 sentences. A train can be stationary.Logical formLearned from23 sentences. Some trains can be from a US-city.Logical formLearned from23 sentences. Trains can be on a branch.Logical formLearned from23 sentences. Trains can be to a world-city.Logical formLearned from23 sentences. Trains may undergo a collection.Logical formLearned from23 sentences. A (train line) can be underground.Logical formLearned from23 sentences. A train can be minutes.Logical formLearned from23 sentences. A train may pertain-to the future.Logical formLearned from23 sentences. Trains may carry passengers.Logical formLearned from23 sentences. A person may ride on a train.Logical formLearned from23 sentences.