what is the {start time} for {Gareth Edwards} has {member of sports team} as {Wales national rugby union team} ?
Gareth Edwards joined the Wales national rugby team at which time?
When did Gareth Edwards join the Wales national rugby team?
SELECT ?m WHERE { ?q property:member_of_sports_team resource:Wales_national_rugby_union_team . ?q property:start_time ?m . resource:Gareth_Edwards property:member_of_sports_team ?q }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1381089> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P54> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q822877> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q1381089 p:P54 ?s . ?s ps:P54 wd:Q822877 . ?s pq:P580 ?value}