About: http://webisa.webdatacommons.org/391606273

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	Furthermore, there are several challenges with laser sail systems, which have been frequently addressed in the literature, for example beam collimation and control.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com