Complex sentence: The manor was bought by a group of Nordic business men in 1994, who wanted to renovate it according to modern conditions, but died returning home by the passenger ferry MS Estonia, which sank on September 28,1994.
Split into simpler sentences: The manor was bought by a group of Nordic business men in 1994, who wanted to renovate it according to modern conditions. They were traveling by passenger ferry Estonia, which sank on September 28,1994.