Complex sentence: At the age of twenty, Ruby was shipped to the Tulsa Zoo to mate with a male elephant named Sneezy and lived in Tulsa for two years, and when she became pregnant was returned to Phoenix in 1996.
Split into simpler sentences: At the age of twenty, Ruby was shipped to the Tulsa Zoo to mate with a male elephant named Sneezy. She lived in Tulsa for two years, and when she became pregnant was returned to Phoenix in 1996.