which tournament events did competitors from the united states win a gold medal?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.04jm9jb m.07k9brc m.0r3rdwy m.07kd3mn m.076vw_4 m.07k7_0z m.07k4z7x m.04j9k3k m.07k48dy m.07kbjrt m.0b6521g m.07k4yk2 m.07k4jp5 m.0jt592v m.076tmvs m.0wf1lyr m.0wjn836 m.0vshv41 m.0b6521k m.06w7h1_ m.0wjv0zt m.0bh9zcc m.0l8gjwv m.03byhjl m.07k5zv7 m.07k4cjq m.07kbd7v m.04jfbf8
2007 World Championships in Athletics – Men's 4 × 100 metres relay 2009 World Championships in Athletics – Men's 400 metres hurdles 2013 US Open – Women's Singles 2009 World Championships in Athletics – Women's 4 × 400 metres relay 2009 World Championships in Athletics – Men's 20 kilometres walk 2009 World Championships in Athletics – Women's long jump 2009 World Championships in Athletics – Men's long jump 2007 World Championships in Athletics – Women's 200 metres 2009 World Championships in Athletics – Men's 4 × 400 metres relay 2009 World Championships in Athletics – Men's 50 kilometres walk 2007 World Championships in Athletics – Women's 4 x 100 metres relay 2009 World Championships in Athletics – Women's 20 kilometres walk 2009 World Championships in Athletics – Men's decathlon 2008 IAAF World Indoor Championships – Women's 60 metres hurdles 2009 World Championships in Athletics – Men's shot put Swimming at the 2013 World Aquatics Championships – Women's 4 × 100 metre medley relay 2013 World Championships in Athletics – Men's decathlon Swimming at the 1973 World Aquatics Championships – Men's 200 metre butterfly 2007 World Championships in Athletics – Women's 100 metres hurdles 1996 Indy 200 at Walt Disney World 2013 Rogers Cup – Women's Singles 2010 IAAF World Indoor Championships – Women's 60 metres hurdles 2013 PGA Championship 2007 World Championships in Athletics – Men's 100 metres 2009 World Championships in Athletics – Men's 400 metres 2009 World Championships in Athletics – Women's 400 metres 2009 World Championships in Athletics – Women's 200 metres 2007 World Championships in Athletics – Men's 200 metres
class class entity entity
sports.tournament_event_competition sports.competitor_competition_relationship m.02lpp7 m.09c7w0
sports.tournament_event_competition sports.competitor_competition_relationship sports.sport_medal sports.sport_country
Tournament event competition Competitor/competition relationship Gold medal united states
none none none none
sports.competitor_competition_relationship.competition sports.competitor_competition_relationship.medal sports.competitor_competition_relationship.country
Competition Medal Country
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :sports.tournament_event_competition . 
?x1 :type.object.type :sports.competitor_competition_relationship . 
VALUES ?x2 { :m.02lpp7 } 
VALUES ?x3 { :m.09c7w0 } 
?x1 :sports.competitor_competition_relationship.competition ?x0 . 
?x1 :sports.competitor_competition_relationship.medal ?x2 . 
?x1 :sports.competitor_competition_relationship.country ?x3 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(AND sports.tournament_event_competition (JOIN (R sports.competitor_competition_relationship.competition) (AND (JOIN sports.competitor_competition_relationship.medal m.02lpp7) (JOIN sports.competitor_competition_relationship.country m.09c7w0))))