PERSON@1 , CH -LRB- NUMBER@1 August NUMBER@2 NUMBER@3 December NUMBER@4 -RRB- was an MISC@1 politician who became the 17th Prime Minister of LOCATION@1 in NUMBER@5 .

PERSON@1 -LRB- NUMBER@1 August NUMBER@2 -- NUMBER@3 December NUMBER@4 -RRB- was the 17th Prime Minister of LOCATION@1 .
