what is the {follows} for {silicon} has {instance of} as {chemical element} ?
What periodic element comes after silicon in the periodic table?
Which chemical element follows silicon in the periodic table?
SELECT ?f WHERE { ?z rdf:type ontology:chemical_element . resource:silicon rdf:type ?z . ?z property:follows ?f }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q670> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P31> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q11344> .
?statement <http://www.wikidata.org/entity/P155> ?value. 
} 

SELECT ?value WHERE { wd:Q670 p:P31 ?s . ?s ps:P31 wd:Q11344 . ?s pq:P155 ?value}