In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

[EX Q]: As is so often the case , we first directed to the " pop - rivets " , and then got the " I haven't seen those in ages " treatment from the assistant . We bought some flat headed nails and washers to fit them , which is a substitute that I've used in the past . We were also picking up some computer parts , but when we arrived at the shop , first there was a problem with the payment which was quickly resolved ( we were just collecting not paying ) , then the parts were not in the shop ! Whilst waiting , we went across the road to a Thai restaurant for their " set lunch " . 
Question: What's a possible reason they bought some flat headed nails and washers ?
[EX A]: Because they needed to build or repair something .

[EX Q]: Carson gave them some milk when they were eating cookies. 
Question: What will happen to others?
[EX A]: eat their cookies

[EX Q]: Out of Time's Abyss is a direct sequel to The Land That Time Forgot and The People That Time Forgot, continuing the lost world saga begun in the earlier stories. It connects the previous two installments, bringing in characters introduced in each. Burroughs completes the revelation of his lost world's unique biological system, only hinted at in the previous installment, in which the slow progress of evolution in the world outside is recapitulated as a matter of individual metamorphosis. This system forms a thematic element serving to unite the three otherwise rather loosely linked Caspak stories.The book begins with Bradley, who had left Fort Dinosaur on an expedition in the first novel and never returned. Bradley and his party are attempting to return to Fort Dinosaur. Along the way, they encounter a creature which appears to be a flying dead man. Some of the members of the party consider it to be a ghost or banshee. Tippet is convinced that he is soon to die, and the next day he is killed by a Tyrannosaurus. The ghost-like creature is seen again, and James is killed by a Smilodon. Bradley disappears during the night, and the remaining members of the party make it safely to Fort Dinosaur. Bradley had been captured by the ghost-like creature, which is soon revealed to be a naturally winged human being, belonging to a subgroup of humanity known as the Wieroo. The Wieroo takes Bradley to the island of Oo-oh, set in Caspak's inland sea. It attempts to keep Bradley in a prison, but he escapes through a secret passage. He meets Co-Tan, a member of the highest human race of mainland Caspak, the Galu, fully human and of a neolithic cultural level. They enter the chamber of the Wieroo king, a huge member of the race, and Bradley kills the creature with its own sword. Co-Tan and Bradley escape the city of the Wieroo and live for several months on the forested coast of Oo-oh. Finally, though, they are discovered by Wieroo. They succeed in capturing two of the Wieroo and forcing them to fly to the mainland, one bearing each of the humans. On the Caspakian mainland, Co-Tan and Bradley meet the party from the outside world from the previous two books, and they return home to America, where Bradley will marry Co-Tan. 
Question: How does Bradley kill the Wieroo king?
[EX A]:
With his own sword