@prefix log: <http://www.w3.org/2000/10/swap/log#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.

{?P rdfs:subPropertyOf ?Q. ?S ?P ?O} => {?S ?Q ?O}.
{?P rdfs:subPropertyOf ?Q. ?Q rdfs:subPropertyOf ?R} => {?P rdfs:subPropertyOf ?R}.