Shirts may vow action.Logical formLearned from2 sentences. A country may vow a campaign.Logical formLearned from2 sentences. A male may vow a probe.Logical formLearned from2 sentences. A (voodoo leader) may vow war.Logical formLearned from2 sentences. A leader may vow transparency.Logical formLearned from2 sentences. A country may vow security.Logical formLearned from2 sentences. Authorities may vow zero-tolerance.Logical formLearned from2 sentences. A government may vow maximum security.Logical formLearned from2 sentences. Leaders may vow cooperation.Logical formLearned from2 sentences. A US-president may vow steps.Logical formLearned from2 sentences. A statement may vow justice.Logical formLearned from2 sentences. A US-president may vow in a statement.Logical formLearned from2 sentences. A leader may vow in a (video message).Logical formLearned from2 sentences. Insurgents may vow jihad.Logical formLearned from2 sentences. Islamists may vow revenge.Logical formLearned from2 sentences.