About: http://webisa.webdatacommons.org/231018392

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	Deep-space missions require precise navigation, in particular when approaching bodies such as Mars, Venus or a comet.
http://www.w3.org/ns/prov#wasQuotedFrom	esa.int