Input: Billy had a pet turtle that he took good care of, everyday. His turtle's name was Tumble. Tumble liked to walk around outside in the garden and dig small holes to sleep in. Billy loved Tumble and would visit him outside when he got home from school. Tumble's favorite food was oatmeal. So, every day after school, Billy would make Tumble a big bowl of oatmeal and take it outside for Tumble to enjoy. Tumble would see Billy and walk up to him as fast as a turtle can go. Billy would put the bowl down and wait for Tumble to come up to the bowl to eat from it. When Tumble reached the bowl, he put his nose on it. But, the oatmeal was too hot to eat. Billy reached down and blew on the hot oatmeal, to cool it down for Tumble to eat. Once the oatmeal was cool enough, Tumble could dig in and eat his big bowl of oatmeal. Billy loved to watch as Tumble ate his bowl of oatmeal, because Billy took good care of Tumble, everyday.
"What would Billy do for Tumble after school?" is "Bring him oatmeal"?

OPTIONS:
- no
- yes
Output: yes
Input: Plants also detect the daily cycle of light and darkness. Do you know how plants respond to these changes? Some plants open their leaves during the day. It is during these hours the plant can collect sunlight. At night, the plant closes its leaves to prevent water loss. Many plants respond to the change in the length of the day. As days grow shorter, some plants respond by going dormant. Dormant is when a plant suspends its growth. It does this in order to survive. Shorter days signal the coming of winter. Winter in most areas means extreme cold. It is also very dry in the winter months. As winter approaches, some plants respond by their leaves changing color. After the change in color, they fall off. This dormancy period helps trees. It allows them to survive the cold and dry winter. Plants only want to grow when conditions are right.
"Why might a plant open its leaves during the day?" is "So that it can gather more light"?

OPTIONS:
- no
- yes
Output: yes
Input: 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 exceptionthe 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 societythe ability to live in permanent shelters year-round without need to follow wildlife. Mysteriously, the Anasazi vanished from the valley around a.d.
"Approximately what year was the Las Vegas Valley covered by a prehistoric lake?" is "Around 3000 b.c"?

OPTIONS:
- no
- yes
Output:
no