In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

[EX Q]: The inhabited history of the Las Vegas Valley stretches to 23,000 b.c. , when much of the area was covered by a prehistoric lake. During this period, the indigenous people lived in caves, hunting the mammals that gathered at the shoreline. The landscape of the valley changed dramatically over the next 200 centuries. The glaciers feeding the lake melted away and the lake evaporated. Fossils tell an obscure story of man's slow and sporadic development. Around 3000 b.c. , native Archaic Indians began to develop a lasting hunting and gathering culture. By this time, the valley was in much the same geographic state as it exists in today, with one exception — the presence of artesian springs that bubbled to the surface in several areas. These springs fed a network of streams draining through the Las Vegas Wash to the Colorado River. The areas surrounding the springs were desert oases: sprawling collections of grasses, trees, and wildlife. Many springs lay in areas that would eventually become the center of the modern Las Vegas metropolis. For about 4000 years, the Archaics thrived in a culture that included many signs of early civilization. Signs of even more advancement appeared halfway through the first millennium a.d. , when the Anasazi Indians inhabited the valley. Far more progressive than the Archaics, the Anasazi utilized such formal agricultural techniques as irrigation to assist their harvest. This permitted the Anasazi to achieve a benchmark of advanced society — the ability to live in permanent shelters year-round without need to follow wildlife. Mysteriously, the Anasazi vanished from the valley around a.d. <sep>When did the Anasazi begin to inhabit the valley?<sep>1000 a.d
[EX A]: No

[EX Q]: NEW DELHI, India (CNN) -- A mob killed a Hindu man in the Indian state of Orissa Thursday as another group attacked a church in another part of the state's troubled Kandhamal district, authorities said Friday. Christian activists stage a peace march in Mumbai, India earlier this month. Krishan Kumar, Kandhamal's top administrative official, told CNN the Hindu man was hacked to death at Raikia. Orissa state, which is dominated by tribal people, borders the Bay of Bengal in east-central India, and Kandhamal is located in the center of the state, which has been racked by Hindu-Christian violence. Praveen Kumar, Kandhamal's superintendent of police, said an investigation is under way in both incidents, and did not say whether any suspects were being sought. Twenty-three civilians, excluding police, have died in the Hindu-Christian violence in Kandhamal this month, according to the administrator. "Arrests are continuing," Praveen Kumar said when asked how many people have been held so far in connection with the violence. The latest attacks occurred on a day when India's federal government called upon the state administration to take "effective, focused and firm measures" to control the conflicts. On Thursday, federal Home Secretary Madhukar Gupta asked the Orissa government to ensure effective deployment of paramilitaries in the state. -- CNN's Harmeet Shah Singh contributed to this report. <sep>In which Indian state is Raikia located?<sep>Kandhamal State
[EX A]: No

[EX Q]: Charlie Y. Reader is a 35-year-old theatrical agent in New York , living a seemingly idyllic life as a bachelor . Numerous women ( among them Poppy , Helen , and Jessica come and go , cleaning and cooking for him . Charlie 's best friend since kindergarten , Joe McCall , who has a wife named Ethel and children in Indianapolis , comes to New York for a stay at Charlie 's apartment , claiming that the excitement is gone from his 11-year marriage and that he wants to leave his wife . Joe envies and is amazed by Charlie 's parade of girlfriends , while Charlie professes admiration for Joe 's married life and family . At an audition , Charlie meets singer-actress Julie Gillis . She has her life planned to a tight schedule , determined to marry and retire from performing to a life of child-rearing by 22 . Although at first she wards off Charlie 's advances , she comes to see him as the ideal man for her plans . Julie demands that Charlie stop seeing other women . Charlie balks , but he begins to fall in love with her . Joe starts keeping company with Sylvia Crewes , a sophisticated classical musician and a typically neglected lover of Charlie 's . Sylvia is approaching 33 and desires marriage as much as the younger Julie does . One day , annoyed by Julie and possibly jealous of Joe 's attentions , Charlie blurts out a proposal of marriage to Sylvia . She is thrilled , only to discover the morning after their engagement party that he has proposed to Julie as well . Joe confesses his love to Sylvia and asks her to marry him . <sep>Who proposes to the classical musician?<sep>Joe
[EX A]:
Yes

