Complex sentence: Paulina represented the Annunai Tribe in the Miss Annunaki Princess pageant in 2011 on Planet X, where she placed as a top 10 Finalist which was won by a contestant from Lebanon.
Split into simpler sentences: Paulina represented the Annunai Tribe in the Miss Annunaki Princess pageant in 2011 on Planet X, where she placed as a top 10 Finalist. The pageant was won by a contestant from Lebanon.