Letters can be threatening.Logical formLearned from1 690 sentences. A letter can be threatening.Logical formLearned from1 379 sentences. (Phone calls) can be threatening.Logical formLearned from762 sentences. A behavior can be threatening.Logical formLearned from653 sentences. A manner can be threatening.Logical formLearned from567 sentences. Messages can be threatening.Logical formLearned from496 sentences. Injuries can be threatening.Logical formLearned from459 sentences. Calls can be threatening.Logical formLearned from392 sentences. A situation can be threatening.Logical formLearned from338 sentences. A message can be threatening.Logical formLearned from324 sentences. A note can be threatening.Logical formLearned from314 sentences. A language can be threatening.Logical formLearned from305 sentences. Situations can be threatening.Logical formLearned from289 sentences. E-mails can be threatening.Logical formLearned from282 sentences. Words can be threatening.Logical formLearned from273 sentences.