Complex sentence: In 1984 Watson attained a trade certificate in carpentry from the City and Guilds of London Institute in London, and from 1985 ran a building and construction business in Western Australia.
Split into simpler sentences: In 1984 Watson attained a trade certificate in carpentry from the City and Guilds of London Institute in London. In 1985 she returned to Australia and ran a building and construction business in Western Australia.