A fragment can be constituted-of-or-filled-with continental crust.Logical formLearned from6 sentences. Crusts can be off sandwiches.Logical formLearned from6 sentences. Movement can be in a crust.Logical formLearned from6 sentences. An inside may pertain-to a crust.Logical formLearned from6 sentences. A crust can be rich.Logical formLearned from6 sentences. Minerals may pertain-to a crust.Logical formLearned from6 sentences. A hydrology may pertain-to a crust.Logical formLearned from6 sentences. Rebound may pertain-to a crust.Logical formLearned from6 sentences. Concentrations can be in a crust.Logical formLearned from6 sentences. Rock can be in a crust.Logical formLearned from6 sentences. Structure may pertain-to a crust.Logical formLearned from6 sentences. Deformations can be in a crust.Logical formLearned from6 sentences. Crusts can be biological.Logical formLearned from6 sentences. A crust may pertain-to a region.Logical formLearned from6 sentences. An oceanic crust can be thin.Logical formLearned from6 sentences.