
246 ◾ Secure Data Provenance and Inference Control
Hospital generator. We also generate hospital information from the yellowpages.
com website. Figure 17.13 shows the results returned from searching for a hospital.
Figure 17.14 is a list of attributes we extracted for each physician in our provenance
knowledge base.
Miscellaneous generators. is module uses http://www.webMD.com to deter-
mine the relationships between a disease, a medication, a test, and a treatment.
erefore, this allows us to add semantic association among these entities to our
Figure 17.11 Single result page (obtained from ratemd.com).
Figure 17.12 Multiresult page, ratemd