query: #title: compare mass born and mass adult
  # Complex constraint from [[Property talk:P2067]]
  #
  SELECT DISTINCT ?item ?massAdult ?massBorn {
       ?item p:P2067 [psn:P2067 ?nodeMassAdult;
                     pq:P642 wd:Q78101716;
                    ].
       ?item p:P2067 [psn:P2067 ?nodeMassBorn;
                     pq:P642 wd:Q4128476;
                    ].
       ?nodeMassAdult     wikibase:quantityAmount ?massAdult.
       ?nodeMassBorn      wikibase:quantityAmount ?massBorn.
       FILTER (?massAdult < (?massBorn * 1.2))
  }