About: http://webisa.webdatacommons.org/71926077

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 30 years or so, particularly in 1966, the Leonids have produced remarkably strong showers as a reminder of the 1833 event, although they have declined overall as the comet-tail cloud spawning the meteors has thinned over time.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalgeographic.com