Fingers may tighten in hair.Logical formLearned from72 sentences. Polls may tighten.Logical formLearned from72 sentences. Persons may tighten a noose.Logical formLearned from71 sentences. (Labor markets) may tighten.Logical formLearned from70 sentences. Budgets may tighten.Logical formLearned from69 sentences. Hands may tighten.Logical formLearned from68 sentences. Rules may be tightened.Logical formLearned from68 sentences. Persons may tighten security.Logical formLearned from65 sentences. Arms may tighten around a waist.Logical formLearned from64 sentences. Muscles may tighten.Logical formLearned from62 sentences. Airports may tighten security.Logical formLearned from62 sentences. Banks may tighten credit.Logical formLearned from62 sentences. Persons may tighten belts.Logical formLearned from62 sentences. Arms may tighten around a person.Logical formLearned from61 sentences. A person may tighten a belt.Logical formLearned from60 sentences.