About: http://webisa.webdatacommons.org/159402300

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	The problem is that your code is written in such way that discarding your calls is legal for the compiler, because your calls do not actually do anything except set a variable which is never looked at.
http://www.w3.org/ns/prov#wasQuotedFrom	allegro.cc