Complex sentence: The Ukraine national team, representing an independent nation, has qualified for the FIFA World Cup once, in 2006, where they reached the quarter-finals led by the former Soviet football star player Oleh Blokhin.
Split into simpler sentences: The Ukraine national football team, representing an independent nation, has qualified for the FIFA World Cup once. That was in the 2006 tournament when they reached the quarterfinals led by the former Soviet football star player Oleh Blokhin.