A relationship can be abstract.Logical formLearned from3 sentences. A crystal can be abstract.Logical formLearned from3 sentences. Landscapes can be abstract.Logical formLearned from3 sentences. A parameter can be abstract.Logical formLearned from3 sentences. Storage can be abstract.Logical formLearned from3 sentences. Screens can be abstract.Logical formLearned from3 sentences. A diary can be abstract.Logical formLearned from3 sentences. A namespace can be abstract.Logical formLearned from3 sentences. An (object type) can be abstract.Logical formLearned from3 sentences. A room can be abstract.Logical formLearned from3 sentences. (Task environments) can be abstract.Logical formLearned from3 sentences. Instructions can be for abstract submission.Logical formLearned from3 sentences. An organizational structure can be abstract.Logical formLearned from3 sentences. A conjecture can be abstract.Logical formLearned from3 sentences. An announcement can be abstract.Logical formLearned from3 sentences.