Question: when was the first australian prime minister elected
[{'answer': '1901'}, {'answer': 'Sir Edmund Barton'}, {'provenance': [{'wikipedia_id': '24117', 'title': 'Prime Minister of Australia', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10035204956295774489}, 'section': 'Section::::Abstract.'}]}, {}, {'provenance': [{'wikipedia_id': '39582', 'title': 'History of Australia', 'section': 'Section::::Federation.\n', 'start_paragraph_id': 147, 'end_paragraph_id': 147, 'meta': {'evidence_span': ['The first Federal elections were held in March 1901 and resulted in a narrow plurality for the Protectionist Party over the Free Trade Party with the Australian Labor Party (ALP) polling third.', "and given Royal Assent by Queen Victoria on 9 July 1900. The Commonwealth of Australia came into being when the Federal Constitution was proclaimed by the Governor-General, Lord Hopetoun, on 1 January 1901. From that point a system of federalism in Australia came into operation, entailing the establishment of an entirely new national government (the Commonwealth government) and an ongoing division of powers between that government and the States. The first Federal elections were held in March 1901 and resulted in a narrow plurality for the Protectionist Party over the Free Trade Party with the Australian Labor Party (ALP) polling third. Labor declared it would offer support to the party which offered concessions and Edmund Barton's Protectionists formed a government, with Alfred Deakin as Attorney-General.", 'The Commonwealth of Australia came into being when the Federal Constitution was proclaimed by the Governor-General, Lord Hopetoun, on 1 January 1901.']}}]}, {'provenance': [{'wikipedia_id': '48653925', 'title': 'Deakin Government (19031904)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The first Federal elections were held in March 1901 and', 'The first Deakin Government was the second federal executive government of the Commonwealth of Australia. It was led by Prime Minister Alfred Deakin, from 24 September 1903 until 27 April 1904. Deakin was the second Prime Minister of Australia, but served as Prime Minister again from 19051908 and 19091910 see Second Deakin Government and Third Deakin Government. The Commonwealth of Australia came into being when the Federal Constitution was proclaimed by the Governor-General, Lord Hopetoun, on 1 January 1901. The first Federal elections were held in March 1901 and']}}]}]