General ideas can be abstract.Logical formLearned from14 sentences. Subprograms can be abstract.Logical formLearned from14 sentences. Tests can be abstract.Logical formLearned from14 sentences. Titles can be abstract.Logical formLearned from14 sentences. An identifier can be abstract.Logical formLearned from14 sentences. Proofs can be abstract.Logical formLearned from14 sentences. A basis can be abstract.Logical formLearned from14 sentences. Collections can be abstract.Logical formLearned from14 sentences. A design can be abstract.Logical formLearned from13 sentences. Music can be abstract.Logical formLearned from13 sentences. Faces can be abstract.Logical formLearned from13 sentences. A matter can be abstract.Logical formLearned from13 sentences. A quantity can be abstract.Logical formLearned from13 sentences. An illusionism can be abstract.Logical formLearned from13 sentences. A scale can be abstract.Logical formLearned from13 sentences.