Complex sentence: They then had to find the 1916 Tin Lizzie and found the 2 cent euro coin clue where they figure out that the next location depicted on the building, Mole Antonelliana where they found their next clue.
Split into simpler sentences: They then had to find the 1916 Tin Lizzie and find the 2 cent euro coin clue. Teams had to figure out that the next location was the Mole Antonelliana building depicted on the coin and was the location of the next clue.