About: http://webisa.webdatacommons.org/167190809

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	Every launch vehicle has ballast onboard used to trim the flight characteristics???intended to move the centre of mass towards the middle of the rocket???usually the weight is a piece of lead or something similar.
http://www.w3.org/ns/prov#wasQuotedFrom	makerfaire.com