TASK DEFINITION: In this task, you are given Wikipedia articles on a range of topics, we ask you to write a question based on the content of the articles that can be answered in a binary manner i.e. True or False.
PROBLEM: Pat Walshe -- On October 4, 1938, Walshe was cast in the most prominent role of his career. He was to make his feature film debut in The Wizard of Oz. Due to Walshe's recognition for novelty performances dressed as animals and his expressive movement, Walshe was awarded the role of Nikko, the head of the Winged Monkeys. Unlike the other monkeys, Nikko was a featured role, serving as the Wicked Witch's (played by Margaret Hamilton) second in command and minion. Though Walshe had no spoken lines, performing his character through physical performance, he did receive an on-screen credit (which was rare for bit players at the time). Instead of the simple stage makeup that Walshe used in his shows, he had to wear complex prosthetics designed by Jack Dawn. While the other monkeys wore simple rubber masks, Walshe's needed to appear in close-ups, so instead a multi-piece prosthetic makeup was produced. The prosthetics were moulded to Walshe's features and then glued to his face, with some appliances protruding out. Walshe also wore a full fur body suit, with a short open tunic as well as a tail and wings. Walshe is listed in the end credits as playing Nikko, and despite being featured frequently in the movie, the name Nikko is never mentioned in the film. In the book, the character is simply called ``the Monkey King'', so many viewers were unsure as to who the character was. Some confused Nikko with the Captain of the Winkie Guards (played by Mitchell Lewis), though it is evident that he was in fact the monkey, since Walshe was 3'10'' (like the monkey) and was well known for his animal impersonations.

SOLUTION: were real monkeys used in the wizard of oz

PROBLEM: Cougar -- The cougar (Puma concolor), also commonly known as the puma, mountain lion, panther, or catamount, is a large felid of the subfamily Felinae native to the Americas. Its range, from the Canadian Yukon to the southern Andes of South America, is the widest of any large wild terrestrial mammal in the Western Hemisphere. An adaptable, generalist species, the cougar is found in most American habitat types. It is the biggest cat in North America, and the second-heaviest cat in the New World after the jaguar. Secretive and largely solitary by nature, the cougar is properly considered both nocturnal and crepuscular, although daytime sightings do occur. The cougar is more closely related to smaller felines, including the domestic cat (subfamily Felinae), than to any species of subfamily Pantherinae, of which only the jaguar is native to the Americas.

SOLUTION: is a cougar the same as a panther

PROBLEM: Metal-halide lamp -- A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds of metals with bromine or iodine). It is a type of high-intensity discharge (HID) gas discharge lamp. Developed in the 1960s, they are similar to mercury vapor lamps, but contain additional metal halide compounds in the quartz arc tube, which improve the efficiency and color rendition of the light. The most common metal halide compound used is sodium iodide. Once the arc tube reaches its running temperature, the sodium dissociates from the iodine, adding orange and reds to the lamp's spectrum from the sodium D line as the metal ionizes. As a result, metal-halide lamps have high luminous efficacy of around 75--100 lumens per watt, which is about twice that of mercury vapor lights and 3 to 5 times that of incandescent lights and produce an intense white light. Lamp life is 6,000 to 15,000 hours. As one of the most efficient sources of high CRI white light, metal halides as of 2005 were the fastest growing segment of the lighting industry. They are used for wide area overhead lighting of commercial, industrial, and public spaces, such as parking lots, sports arenas, factories, and retail stores, as well as residential security lighting and automotive headlamps (xenon headlights).

SOLUTION:
is metal halide the same as mercury vapor