What is {internet domain} of {continent} of {Antarctic ice sheet} ?
who space of landmass of antarctic ice sheet?
who  domain of continent of antarctic ice sheet?
SELECT ?y WHERE { ?n property:top-level_Internet_domain ?y . resource:Antarctic_ice_sheet property:continent ?n }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q571430> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P30>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?X . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?X. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P78> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q571430 wdt:P30 ?X . ?X wdt:P78 ?answer}