An investigation can be into a strike.Logical formLearned from28 sentences. Documents can be relevant to an investigation.Logical formLearned from28 sentences. An investigation can be narrow.Logical formLearned from28 sentences. A government-agency may lead an investigation.Logical formLearned from28 sentences. Investigations can be chemical.Logical formLearned from28 sentences. Results can be from investigations.Logical formLearned from28 sentences. An opportunity can be for investigation.Logical formLearned from28 sentences. Investigation may be undertaken.Logical formLearned from28 sentences. Improprieties may undergo an investigation.Logical formLearned from28 sentences. Officials may undergo an investigation.Logical formLearned from28 sentences. Traffickers may undergo an investigation.Logical formLearned from28 sentences. (Bid rigging) may undergo an investigation.Logical formLearned from28 sentences. Investigations may be required.Logical formLearned from28 sentences. Investigations can be at a site.Logical formLearned from28 sentences. An investigation can be retrospective.Logical formLearned from28 sentences.