About: http://webisa.webdatacommons.org/28741780

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Hedonometer's creators admit that Twitter is an imperfect tool for measuring online happiness, let alone the average emotional state of billions around the world on a given day.
http://www.w3.org/ns/prov#wasQuotedFrom	pcmag.com