About: http://webisa.webdatacommons.org/407523033

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	What is probably happening in your code is an attempt to concatenate two matrices or vectors with different numbers of rows, like this:
http://www.w3.org/ns/prov#wasQuotedFrom	aptech.com