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PrefixNamespace IRI
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
n4daniweb.
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:81111357
rdf:type
prov:Entity
prov:value
You read in the credit card type from the user, but then you never do anything with what you read in (the ct variable), but instead set up a card variable and assume the card is a Visa.
prov:wasQuotedFrom
n4:com
Subject Item
isap:177067100
prov:wasDerivedFrom
isa:81111357