About: http://webisa.webdatacommons.org/6246564

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	An explanation of why astronomers use different types of tools and why some of these tools are ground-based and some are space-based.
http://www.w3.org/ns/prov#wasQuotedFrom	harvard.edu