https://jena.apache.org/documentation/javadoc/arq/org.apache.jena.arq/org/apache/jena/sparql/algebra/op/OpQuad.html
OpQuad (Apache Jena ARQ)
declaration: module: org.apache.jena.arq, package: org.apache.jena.sparql.algebra.op, class: OpQuad
apache jenaarq