what is the name of the mountain that was first ascended by hans kaufmann?
Entity Entity
m.0b6fg6x m.0b6p7pl
Mount Freshfield Mount Bowlen
class entity
geography.mountain m.0k0n7vf
geography.mountain geography.mountaineer
Mountain Hans Kaufmann
none none
geography.mountain.first_ascenders
First ascenders
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 :geography.mountain . 
VALUES ?x1 { :m.0k0n7vf } 
?x0 :geography.mountain.first_ascenders ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND geography.mountain (JOIN geography.mountain.first_ascenders m.0k0n7vf))