When did John Denver receive the Grammy Award for Best Musical Album for Children?
SELECT ?value1 ?value2 WHERE { wd:Q105460 p:P166 ?s . ?s ps:P166 wd:Q5593836 . ?s pq:P585 ?value1 . ?s pq:P1346 ?value2 }
john denver: Q105460 grammy award for best musical album for children: Q5593836