The police may tighten security.Logical formLearned from29 sentences. Balls may be tightened.Logical formLearned from29 sentences. A hand may tighten on a shoulder.Logical formLearned from29 sentences. Belts may tighten.Logical formLearned from29 sentences. A knot may tighten.Logical formLearned from29 sentences. A voice may tighten.Logical formLearned from29 sentences. A noose may tighten around throats.Logical formLearned from29 sentences. Hands may tighten a grip.Logical formLearned from29 sentences. A country may tighten sanctions.Logical formLearned from29 sentences. Monetary policy may tighten.Logical formLearned from29 sentences. A country may tighten a belt.Logical formLearned from28 sentences. Liquidity may tighten.Logical formLearned from28 sentences. Fingers may tighten.Logical formLearned from28 sentences. A contest may tighten.Logical formLearned from28 sentences. A government may tighten rules.Logical formLearned from28 sentences.