Spheres can be abstract.Logical formLearned from2 sentences. Traditional methods may be based on abstract interpretation.Logical formLearned from2 sentences. A (class tracelistener) can be abstract.Logical formLearned from2 sentences. A (chromosome class) can be abstract.Logical formLearned from2 sentences. Classes may play in an abstract (factory pattern).Logical formLearned from2 sentences. An abstract class can be a class.Logical formLearned from2 sentences. A framework can be abstract.Logical formLearned from2 sentences. Adventures can be abstract.Logical formLearned from2 sentences. A rule can be abstract.Logical formLearned from2 sentences. A goal can be abstract.Logical formLearned from2 sentences. A glyph can be abstract.Logical formLearned from2 sentences. An abstract model can be similar to a (game board).Logical formLearned from2 sentences. Abstract machines may provide support.Logical formLearned from2 sentences. (Simulation models) can be abstract.Logical formLearned from2 sentences. A (trust model) can be abstract.Logical formLearned from2 sentences.