This HTML5 document contains 4 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
n5perlmonks.
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:161220764
rdf:type
prov:Entity
prov:value
It is a global flag and thus enables wanrings in modules you didnt write (which may have been written deliberately without warnings enabled for some reason.) Also because use warnings enables you to selectively enable or disable warnings for various types of problem as well as for the individual modules you are using (assuming that they have been written with warnings::register and its functions).
prov:wasQuotedFrom
n5:org
Subject Item
isap:428533058
prov:wasDerivedFrom
isa:161220764