Complex sentence: Upon arrival in Singapore, teams took a bumboat to the island of Pulau Ubin and upon arrival had to find a coconut stand and together drink all of the coconut's water before they were given their next clue.
Split into simpler sentences: Upon arrival in Singapore, teams took a bumboat to the island of Pulau Ubin. There they had to find a coconut stand and both had to drink all of a coconut's water before they were given the next clue.