Presidents may vow cooperation.Logical formLearned from2 sentences. A group may vow (revenge attacks).Logical formLearned from2 sentences. Employees may vow to get into (labor disputes).Logical formLearned from2 sentences. A head of an electoral commission may vow that something-is-the-case.Logical formLearned from2 sentences. A leader of a group may vow a reply.Logical formLearned from2 sentences. A female may vow during a debate.Logical formLearned from2 sentences. A world-city may vow measures.Logical formLearned from2 sentences. A world-city may vow cooperation.Logical formLearned from2 sentences. A wing may vow for a part.Logical formLearned from2 sentences. Death to a country may vow allegiance to chief.Logical formLearned from2 sentences. Al-shaalan may vow that something-is-the-case.Logical formLearned from2 sentences. (Militia leader) may vow holy war.Logical formLearned from2 sentences. Fighters may vow a letup.Logical formLearned from2 sentences. A cleric may vow from a shrine.Logical formLearned from2 sentences. A world-city may vow defiance.Logical formLearned from2 sentences.