A group may contain a country.Logical formLearned from64 sentences. Products may contain chemicals.Logical formLearned from64 sentences. An issue may contain an article.Logical formLearned from64 sentences. A law may contain a provision.Logical formLearned from64 sentences. A site may contain a page.Logical formLearned from64 sentences. A site may contain links to (web sites).Logical formLearned from64 sentences. An envelope may contain a powder.Logical formLearned from64 sentences. Ammunition may contain depleted uranium.Logical formLearned from64 sentences. Terms may be contained.Logical formLearned from63 sentences. An information may be contained in a section.Logical formLearned from63 sentences. A feed may contain photos from a website.Logical formLearned from63 sentences. Vaccines may contain thimerosal.Logical formLearned from63 sentences. Products may contain ephedra.Logical formLearned from63 sentences. Books may contain information.Logical formLearned from63 sentences. A (summary entry) may contain a sentence.Logical formLearned from62 sentences.