Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: Sinbad's flagship oil tanker is pulled underwater by what creature? Title: The 7 Adventures of Sinbad Movie plot: The film follows an early version of Sinbad the Sailor, who must undertake seven tasks to halt an impending disaster that threatens to create an El Nino. Adrian Sinbad is a wealthy owner of an oil company, and the descendant of a long-line of great mariners. He and a small group of people sail to the Bay of Bengal after learning that his oil rig had been sunk by a band of pirates. The boat becomes trapped in a waterspout and Sinbad refuses to go back, ignoring the pleas of his crew. The boat gets abducted above the sea and he is marooned ashore. Sinbad battles a Hatzegopterx and meets up with his surviving crew, Gemma, Whitaker, Mehrak the pirate captain, and Atash the oil tanker captain and his crew member. Sinbad also encounters Loa, a native warrior living on the island. Loa tells Sinbad that he must fulfill a long-forgotten pledge to become a warrior and save the island from an El Nino made by Elmec Ishu, a supernatural force that is angered by the oil spill after Sinbad's rig is sunk. The island suddenly experiences a violent earthquake, and the group then jumps on a log, which is actually the back of a large but harmless sea creature. They are later bombarded by a flock of large flying reptiles (called Rocs in the film), which think they're intruders. Meanwhile, Simon, the headmaster of Sinbad's company, takes over while Sinbad is missing. The group manage to fight off a Roc and flee the swarm, but a crew member is injured by another Roc. They depart to a small cave, which houses a strong-fisted Yowie. Whitaker tries to identify the creature, but is injured by it. Sinbad knocks the Yowie off its feet, causing it to break its spine. As dusk falls, the men are paralyzed by some seals, and are to be eaten by them. Loa and Gemma prepare to kill the Seals when night comes, so that they can avoid getting paralyzed by looking into their eyes. Gemma is paralyzed and eaten by a Seal. Loa wards off the Seals with a torch as they are preparing to eat the men, and Sinbad distracts their Bull by throwing seal flesh...
waterspout