PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The process continues until a comet is born.Since comets form far from their star in the icy regions of the planetary system, molecules, such as water, carbon dioxide and methane, freeze onto the micron-sized dust particles and rocks before they collide to form a comet.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nasa.gov