What is {start time} of {beer} that is {statement is subject of} is {beer in Egypt} ?
When beer started in Egypt?
SELECT ?obj WHERE { wd:Q44 p:P580 ?s . ?s ps:P580 ?obj . ?s pq:P805 wd:Q28454522 }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q44> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P580> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P805> <http://wikidata.dbpedia.org/resource/Q28454522>
} 

When did the Egyptians start making beer?