Attacks can be on a US-city.Logical formLearned from3 560 sentences. An anniversary may pertain-to attacks.Logical formLearned from3 487 sentences. Attacks can be on a country.Logical formLearned from3 264 sentences. Attacks can be repeated.Logical formLearned from3 036 sentences. Attacks can be in a country.Logical formLearned from3 009 sentences. An attack may pertain-to a world-city.Logical formLearned from2 905 sentences. An attack may undergo an event.Logical formLearned from2 902 sentences. Attacks may pertain-to week.Logical formLearned from2 870 sentences. Attacks can be daily.Logical formLearned from2 741 sentences. Attacks may pertain-to an international-political-entity.Logical formLearned from2 684 sentences. Attacks can be in a US-city.Logical formLearned from2 676 sentences. Attacks can be on troops.Logical formLearned from2 673 sentences. An aftermath may pertain-to attacks.Logical formLearned from2 528 sentences. An attack can be against a country.Logical formLearned from2 528 sentences. An attack can be planned.Logical formLearned from2 499 sentences.