Abstract: A computer-implemented method for processing information includes collecting data objects from one or more data repositories, the data objects having respective properties, which identify the data objects. The properties of the collected data objects are analyzed in order to derive respective identifiers corresponding to the data objects. A text string that matches one of the identifiers of a data object is identified within a context in a document. Responsively to the context, an indication that the identified text string is a valid instance of the data object is generated, and the document is processed responsively to the indication.