PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I have worked with something similar in the past on physics homework called Web-assign, and it just does not provide any feedback except whether you got it right or wrong However, since it is a Java program I would suggest you get the full code (or at least enough to test the section you are working on) and actually build/debug it yourself before submitting your answer to the web-page.
http://www.w3.org/ns/prov#wasQuotedFrom
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