<https://w3id.org/framester/framenet/abox/lu/challenging.a> <https://w3id.org/framester/framenet/tbox/polysemous> "F"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://w3id.org/framester/framenet/abox/lu/challenging.a> <https://w3id.org/framester/framenet/tbox/lexUnitFrame> <https://w3id.org/framester/framenet/abox/frame/Difficulty> .
<https://w3id.org/framester/framenet/abox/lu/challenging.a> <https://w3id.org/framester/framenet/tbox/hasSemType> <https://w3id.org/framester/framenet/abox/semType/Negative> .
<https://w3id.org/framester/framenet/abox/lu/challenging.a> <https://w3id.org/framester/framenet/tbox/definition> "fn15schema: requiring a person's full abilities and effort"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://w3id.org/framester/framenet/abox/lu/challenging.a> <https://w3id.org/framester/framenet/tbox/LU_name> "challenging.a"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://w3id.org/framester/framenet/abox/lu/challenging.a> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://w3id.org/framester/framenet/tbox/LexUnit> .