(Bond traders) may be concealed.Logical formLearned from7 sentences. Work may be concealed.Logical formLearned from7 sentences. Features may be concealed.Logical formLearned from7 sentences. Defendant may be concealed.Logical formLearned from7 sentences. A person may be concealed.Logical formLearned from7 sentences. Skyscrapers may conceal a (labor abuse).Logical formLearned from7 sentences. A (crash site) may be concealed by a canopy of trees.Logical formLearned from7 sentences. Explosives may be concealed on a body.Logical formLearned from7 sentences. A cocaine may be concealed.Logical formLearned from7 sentences. A chinese government may conceal a truth.Logical formLearned from7 sentences. A world-city may conceal mountains of garbage.Logical formLearned from7 sentences. Documents may be concealed at homes of scientists.Logical formLearned from7 sentences. A bomb may be concealed in a (plastic bag).Logical formLearned from7 sentences. A person may conceal a concern.Logical formLearned from7 sentences. A country may conceal information on deadly weapons.Logical formLearned from7 sentences.