What is the {nuclear weapon} for {product or material produced} of {Manhattan Project}
In the weapon from the Manhattan Project, what material or product was used?
What product or material produced was used in the nuclear weapon from the Manhattan Project?
SELECT DISTINCT ?l WHERE { ?l rdf:type ontology:nuclear_weapon . resource:Manhattan_Project property:product_or_material_produced ?l }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q127050> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1056> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q12802> } 
 select distinct ?obj where { wd:Q127050 wdt:P1056 ?obj . ?obj wdt:P31 wd:Q12802 } 
The Gadget