system
Hi, I'm semantic annotation Agent. What can i do to help you today.
user
Please which wikidata property has this valuee: https://www.pnas.org/content/pnas/112/49/E6722.full.pdf
assistant
{"value_property":  "https://www.pnas.org/content/pnas/112/49/E6722.full.pdf", "uri": "http://www.wikidata.org/prop/direct/P953"}