Persons may be tested by difficulties.Logical formLearned from11 sentences. A world-city may test a device.Logical formLearned from11 sentences. A country may test an animal.Logical formLearned from11 sentences. A cow may test positive for mad disease.Logical formLearned from11 sentences. Rockets may be tested.Logical formLearned from11 sentences. Some skiers may be tested.Logical formLearned from11 sentences. A female of a country may test positive.Logical formLearned from11 sentences. An appeal may test.Logical formLearned from11 sentences. A crackdown may test a commitment to democracy.Logical formLearned from11 sentences. A number of athletes may test positive.Logical formLearned from11 sentences. Computers may be tested.Logical formLearned from11 sentences. Some athlete may test positive.Logical formLearned from11 sentences. A ukrainian may test positive.Logical formLearned from11 sentences. A country may test nuclear weapons.Logical formLearned from11 sentences. An index may test a mark.Logical formLearned from11 sentences.