(Read-only view - Sponging disallowed)

This property refers to a source data item that has been used during the creation of a data item. Examples for source data are the content of a document used for machine learning, the statements in a knowledge base used to entail a new statement, and the entries in a database used to answer a query. Notice, all source data has provenance; we strongly encourage to describe this provenance as well, at least as far as available information permits.