https://w3id.org/framester/conceptnet5/data/en/trapezoid <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/shape> <https://w3id.org/framester/conceptnet5/data/en/figure> <https://w3id.org/framester/conceptnet5/data/en/quadrangle.n.geometry> <https://w3id.org/framester/conceptnet5/data/en/quadrilateral> risorse dalla linked data cloud