<http://webisa.webdatacommons.org/149011187>	<http://www.w3.org/ns/prov#value>	"If x is a formula, there is exactly one symbol left after this expression, this symbol is a closing parenthesis, and y itself is a formula." .
<http://webisa.webdatacommons.org/prov/472358250>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/149011187> .
<http://webisa.webdatacommons.org/149011187>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<reference.com> .
<http://webisa.webdatacommons.org/149011187>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .