About: http://webisa.webdatacommons.org/44839696

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	Most of the answers here are off by 22.5 degrees for their 45 degree intervals, and map e.g. 0-45 as N, rather than [337.5-360],[0-22.5] to N. You need to offset before doing the math to correct for this.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com