What is the {said to be the same as} and the {opposite of} of {Slavery} ?
What are slavery's equivalent and opposite?
What is the equivalent and opposite of Slavery?
SELECT ?c ?u WHERE { resource:slavery property:said_to_be_the_same_as ?c . resource:slavery property:opposite_of ?u }
 SELECT ?ans_1 ?ans_2 WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q8463> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P460> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?ans_1. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q8463> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P461> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?ans_2. } 
SELECT ?ans_1 ?ans_2 WHERE { wd:Q8463 wdt:P460 ?ans_1 . wd:Q8463 wdt:P461 ?ans_2 }