Question: what is the legal age for marriage in australia
[{'answer': '18', 'provenance': [{'wikipedia_id': '3171145', 'title': 'Marriage Act 1961 (Australia)', 'start_paragraph_id': 4, 'start_character': 151, 'end_paragraph_id': 4, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Marriageable age.\n'}]}, {'provenance': [{'wikipedia_id': '3171145', 'title': 'Marriage Act 1961 (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': 13210755020609454561}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3171145', 'title': 'Marriage Act 1961 (Australia)', 'start_paragraph_id': 4, 'start_character': 13, 'end_paragraph_id': 4, 'end_character': 456, 'bleu_score': 0.557293898248102, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13210755020609454561}, 'section': 'Section::::Marriageable age.\n'}]}, {'provenance': [{'wikipedia_id': '40139814', 'title': 'Marriage in Australia', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Marriage in Australia is regulated by the federal "Marriage Act 1961" (Cth) , which applies uniformly throughout Australia (including its external territories) to the exclusion of all state laws on the subject. Australian law recognises only monogamous marriages, being marriages of two people, including same-sex marriages, and does not recognise any other forms of union, including traditional Aboriginal marriages, polygamous marriages or concubinage. The marriage age for marriage in Australia is 18 years, but in "unusual and exceptional circumstances" a person aged 16 or 17 can marry with parental consent and authorisation by a court.', 'The marriage age for marriage in Australia is 18 years', 'The marriage age for marriage in Australia is 18 years, but in "unusual and exceptional circumstances" a person aged 16 or 17 can marry with parental consent and authorisation by a court.']}}]}, {'provenance': [{'wikipedia_id': '3171145', 'title': 'Marriage Act 1961 (Australia)', 'section': 'Section::::Marriageable age.\n', 'start_paragraph_id': 4, 'end_paragraph_id': 4, 'meta': {'evidence_span': ['Part II (s.10-21) deals with the marriageable age and the marriage of minors. In the original 1961 Act, marriageable age was set at 16 for females and 18 for males. However, under section 12 of the original 1961 Act a female 14 or 15 years or a male 16 or 17 years could apply to the court for permission to marry. The marriageable age was equalised in 1991 by the "Sex Discrimination Amendment Act 1991", which raised the marriageable age of females to 18.', 'The marriageable age was equalised in 1991 by the "Sex Discrimination Amendment Act 1991", which raised the marriageable age of females to 18.', 'The marriageable age was equalised in 1991 by the "Sex Discrimination Amendment Act 1991", which raised the marriageable age of females to 18']}}]}]