A sphere may pertain-to a nation.Logical formLearned from7 sentences. Experience can be in a sphere.Logical formLearned from7 sentences. Cooperation can be in a sphere.Logical formLearned from6 sentences. Bilateral relations can be in spheres.Logical formLearned from6 sentences. Problems can be in a sphere.Logical formLearned from6 sentences. Cooperation can be in a sphere of security.Logical formLearned from6 sentences. A sphere may be clad in crystals.Logical formLearned from6 sentences. Progress can be in spheres.Logical formLearned from6 sentences. Spheres can be as trade.Logical formLearned from6 sentences. Persons can be from some spheres.Logical formLearned from6 sentences. Guarantees can be in a (security sphere).Logical formLearned from6 sentences. A sphere may pertain-to a competence.Logical formLearned from6 sentences. Spheres can be wide-ranging.Logical formLearned from6 sentences. Bilateral relations can be in some spheres.Logical formLearned from6 sentences. A sphere can be ecological.Logical formLearned from6 sentences.