SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/William_Deane> <http://dbpedia.org/ontology/primeMinister> ?uri . }
Who was the PM under which William Deane served?
SELECT DISTINCT ?c WHERE { resource:William_Deane property:prime_minister ?c . }
Paul Keating, John Howard
[Paul Keating, John Howard] was the PM under which William Deane served.
[Paul Keating, John Howard] was the prime minister under whom William Dean served.
The prime minister of him  are [Paul Keating, John Howard].
His prime ministers are [Paul Keating, John Howard].