Complex sentence: Dirk Hartog Island, an island off the coast of Western Australia, was discovered in October 1616 by the Dutch sea captain Dirk Hartog, who was blown off course while sailing from Cape Town to Batavia (Jakarta).
Split into simpler sentences: Dirk Hartog Island, is an island off the coast of Western Australia. The island was discovered in October 1616 by the Dutch sea captain Dirk Hartog, who was blown off course while sailing from Cape Town to Batavia (Jakarta).