A back can be abstract.Logical formLearned from2 sentences. A (screening process) can be abstract.Logical formLearned from2 sentences. Novels can be abstract.Logical formLearned from2 sentences. A (reference model) can be abstract.Logical formLearned from2 sentences. (Information models) can be abstract.Logical formLearned from2 sentences. An (information system) can be abstract.Logical formLearned from2 sentences. Musical elements can be abstract.Logical formLearned from2 sentences. Urban areas can be abstract.Logical formLearned from2 sentences. Damage can be abstract.Logical formLearned from2 sentences. A page can be abstract for a paper.Logical formLearned from2 sentences. Abstract expressionism can be a form of art.Logical formLearned from2 sentences. Ruminations can be abstract.Logical formLearned from2 sentences. A break can be abstract.Logical formLearned from2 sentences. Trends can be in abstract expressionism.Logical formLearned from2 sentences. (Security concepts) can be abstract.Logical formLearned from2 sentences.