what is the {character role} for {Who Framed Roger Rabbit} has {voice actor} as {Richard Williams} ?
What character did actor Richard Williams perform the voice of in Who Framed Roger Rabbit?
SELECT ?value WHERE { wd:Q379873 p:P725 ?s . ?s ps:P725 wd:Q1999598 . ?s pq:P453 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q379873> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P725> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q1999598> .
?statement <http://www.wikidata.org/entity/P453> ?value. 
} 

What character did Richard Williams voice in Who framed Roger Rabbit?