Complex sentence: He was a Teachta Dála (TD) from 1969 to 1997, and as Minister for Foreign Affairs from 1982 to 1987 he helped negotiate the Anglo-Irish Agreement and in 1987 he served for a short time as Tánaiste (deputy prime minister).
Split into simpler sentences: He was a Teachta Dála (TD) from 1969 to 1997, and as Minister for Foreign Affairs from 1982 to 1987 he helped negotiate the Anglo-Irish Agreement. In 1987 he served for a short time as Tánaiste (deputy prime minister).