A preliminary report can be by investigators.Logical formLearned from30 sentences. Investigators may interview persons.Logical formLearned from30 sentences. Investigators may rule_out terrorism.Logical formLearned from30 sentences. Contact can be with investigators.Logical formLearned from30 sentences. Investigators may look into a case.Logical formLearned from30 sentences. Investigators may spend some hours.Logical formLearned from30 sentences. Investigators may examine links.Logical formLearned from30 sentences. Investigators may pertain-to a service-agency.Logical formLearned from29 sentences. Investigators may be denied.Logical formLearned from29 sentences. Investigators may develop.Logical formLearned from29 sentences. A principal investigator can be on a study.Logical formLearned from29 sentences. An investigator may note that something-is-the-case.Logical formLearned from29 sentences. Investigators may question witnesses.Logical formLearned from29 sentences. Research can be by investigators.Logical formLearned from29 sentences. A license may pertain-to a private investigator.Logical formLearned from29 sentences.