About: http://webisa.webdatacommons.org/175199770

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	Since the mid-19th century instruments have been used globally to measure temperature and other variables, with more comprehensive and diverse sets of observations available from 1950 onwards.
http://www.w3.org/ns/prov#wasQuotedFrom	ct.gov