Input (grade 12): In late 1989 a team led by gemstone prospector Heitor Dimas Barbosa uncovered in a small mountain range what some consider to be the finest tourmaline crystals ever found.
Output (grade 11): In late 1989 a team looking for gemstone and led by Heitor Dimas Barbosa found what some people believe are the best Tourmaline crystals ever found.