What is {route of administration} of {mercury poisoning} that is {symptoms} is {contact dermatitis} ?
Tell me whether mercury poisoning have symptom of contact dermatitis?
Is contact dermatitis a symptom of mercury poisoning?
SELECT ?a WHERE { ?v property:symptoms resource:contact_dermatitis . resource:mercury_poisoning property:route_of_administration ?v . ?v property:route_of_administration ?a }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q408089> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P636> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P780> <http://wikidata.dbpedia.org/resource/Q783903>
} 

SELECT ?obj WHERE { wd:Q408089 p:P636 ?s . ?s ps:P636 ?obj . ?s pq:P780 wd:Q783903 }