About: http://webisa.webdatacommons.org/239646822

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	Quoting Zeke (Reply 10):They are touch down zone limitation markers, must touch down before that mark, die mainly to the winds experienced at that airport.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net