Complex sentence: When Labor under Gough Whitlam won the 1972 election, Hayden became Minister for Social Security, and in that capacity introduced the single mothers pension and Medibank, Australia's first system of universal health insurance.
Split into simpler sentences: When Labor under Gough Whitlam won the 1972 election, Hayden became Minister for Social Security. In that capacity he introduced the single mothers'pension and Medibank, Australia's first system of universal health insurance.