How many matches did Roy Keane play for Republic of Ireland national under-21 football team and how many goals did he score?
SELECT ?value1 ?value2 WHERE { wd:Q188632 p:P54 ?s . ?s ps:P54 wd:Q1672798 . ?s pq:P1350 ?value1 . ?s pq:P1351 ?value2 }
roy keane: Q188632 republic of ireland national under-21 football team: Q1672798