What is the {sub-orbital spaceflight} for {crew member} of {Alan Shepard}
What suborbital spaceflight meant for the mission was Alan Shepard's crew member part of
what did sub-orbital spaceflight mean for the mission that the crew member Alan Shepard was a part of
SELECT DISTINCT ?q WHERE { ?q property:crew_member(s) resource:Alan_Shepard . ?q rdf:type ontology:sub-orbital_spaceflight }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1029> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q174979> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q832435> } 
 select distinct ?sbj where { ?sbj wdt:P1029 wd:Q174979 . ?sbj wdt:P31 wd:Q832435 } 
Mercury-Redstone 3