An attack may occur.Logical formLearned from955 sentences. An attack can be unprecedented.Logical formLearned from954 sentences. Victims can be constituted-of-or-filled-with attacks.Logical formLearned from952 sentences. An attack can be by a country.Logical formLearned from952 sentences. Some persons may be killed in an attack.Logical formLearned from948 sentences. An attack can be cowardly.Logical formLearned from946 sentences. Attacks can be spectacular.Logical formLearned from941 sentences. Attacks can be regular.Logical formLearned from935 sentences. An attack can be fresh.Logical formLearned from924 sentences. (Bomb attacks) can be deadly.Logical formLearned from922 sentences. An attack can be on a male.Logical formLearned from920 sentences. Attacks can be against troops.Logical formLearned from918 sentences. Involvement can be in attacks.Logical formLearned from917 sentences. (Terror attacks) may pertain-to a world-city.Logical formLearned from916 sentences. Attacks may occur.Logical formLearned from906 sentences.