About: http://webisa.webdatacommons.org/271209380

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	Paying for the venue is an example of an essential cost; t-shirts are an example of a cost which can be eliminated.
http://www.w3.org/ns/prov#wasQuotedFrom	yapceurope.org