Poisoning can be a possibility.Logical formLearned from4 sentences. A probe can be into a poisoning.Logical formLearned from4 sentences. (Radiation poisoning) can be at a clinic.Logical formLearned from4 sentences. Some persons may suffer (carbon monoxide poisoning).Logical formLearned from4 sentences. A story can be behind a poisoning.Logical formLearned from4 sentences. Clues can be in a (poisoning death) of russian spy.Logical formLearned from4 sentences. Marine mammals may undergo a poisoning.Logical formLearned from4 sentences. A suspect can be in a (poisoning death).Logical formLearned from4 sentences. An element can be in a (poisoning case).Logical formLearned from4 sentences. A poisoning may pertain-to an ex-spy.Logical formLearned from4 sentences. A russian spy may die in a poisoning.Logical formLearned from4 sentences. Russian spy may die of poisoning.Logical formLearned from4 sentences. A story of a poisoning may captivate a country.Logical formLearned from4 sentences. Police may investigate poisoning of russian spy.Logical formLearned from4 sentences. Poisoning may become some kind of a trademark of a secret war.Logical formLearned from4 sentences.