Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
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Question: Context: Campers Gene and Marie Marsden took pride in being good citizens when in the wild. While driving miles to the Green River Lakes area, they taught their children what they had learned in the bear safety handbook put out by the Bridger-Teton Forest Service. Mr. and Mrs. Marsden did their best to keep a tidy camp. As the handbook had said to hang all food at least ten feet off the ground and four feet out from the trees, they did that and locked their food in their trailer at night. It was already dark when they went to bed, but they _ the campsite with flashlights, making sure nothing was left out. Following the bear book's advice, they slept a hundred yards from where they cooked their food, and kept the car near their tents, separated from the trailer, which they left up at the other camp. The Marsdens liked having their dog Spike on guard. But on the first night, Spike would not stop barking. When Marie Marsden pulled the tent open and shone her flashlight, she saw a young bear. They all piled into the car and drove quickly down the path, calling out of the window to Spike and abandoning the trailer. They drove to a pay phone and called a Fish and Game Department guard, who identified the bear by the white ring of the fur the Marsdens had seen around his neck. The authorities informed the Marsdens that the bear was a young male that they'd been keeping an eye on. The next morning, the Marsdens heard helicopters circling over the mountain and wondered if it might have something to do with the bear. After spending the night in the public campground, they drove back to their site. Wandering the area in search of clues, Marie came to a stop below a tall tree. She slapped her head and shouted, "Oh no!" "What is it?" Gene asked. Marie pointed at the ground where Spike's dog food bowl lay upside down. A week after their return home, the Marsdens read the headline in their local paper. "Bear Killed in Wind Rivers." According to the article, the Fish and Game Department had shot the young bear because, having been rewarded for invading a human campsite, it would likely to do so again. The Marsdens knew they had been lucky in the encounter, yet much to their shame and sadness, they also knew that the bear had not. 
 Question: Who is mostly to blame for the bear's death according to the writer?

Answer: the marsdens.


Question: Context: Chronic lymphocytic leukemia (CLL) cells depend on microenvironmental factors for proliferation and survival. In particular, the B-cell receptor (BCR) and nuclear factor- B (NF-B) pathways are activated in the lymph node (LN) microenvironment. Thus, model systems mimicking tumor-host interactions are important tools to study CLL biology and pathogenesis. We investigated whether the recently established NOD/scid/c(null) (NSG) mouse xenograft model can recapitulate the effects of the human microenvironment. We assessed, therefore, tumor characteristics previously defined in LN-resident CLL cells, including proliferation, and activation of the BCR and NF-B pathways. We found that the murine spleen (SP) microenvironment supported CLL cell proliferation and activation to a similar degree than the human LN, including induction of BCR and NF-B signaling in the xenografted cells. Next, we used this model to study ibrutinib, a Bruton's tyrosine kinase inhibitor in clinical development. Ibrutinib inhibited BCR and NF-B signaling induced by the microenvironment, decreased proliferation, induced apoptosis and reduced the tumor burden in vivo. Thus, our data demonstrate that the SP of xenografted NSG mice can, in part, recapitulate the role of the human LN for CLL cells. In addition, we show that ibrutinib effectively disrupts tumor-host interactions essential for CLL cell proliferation and survival in vivo. 
 Question: What is the name of Bruton's tyrosine kinase inhibitor that can be used for treatment of chronic lymphocytic leukemia?

Answer: ibrutinib


Question: Context: Winslow Homer was the second of three sons of Henrietta Benson and Charles Savage Homer. He was born in Boston, Massachusetts in 1836 and grew up in Cambridge. His father was an importer of tools and other goods. His mother was a painter. Window got his interest in drawing and painting from his mother. But his father also supported his son's interest. Once, on a business trip to London, Charles Homer bought a set of drawing examples for his son to copy. Young Winslow used these to develop his early skill. Winslow's older brother Charles went to Harvard University in Cambridge. The family expected Winslow would go, too. But, at the time, Harvard did not teach art. So Winslow's father found him a job as an assistant in the trade of making and preparing pictures for printed media. At 19, Window learned the process of lithography .This work was the only formal training that Winslow ever received in art. In 1859, Window Homer moved to New York City to work for Harper's Weekly. Homer also started to paint seriously. He hoped to go to Europe to study painting. But, something would intervene the direction of Window Homer's artistic work. Harper's magazine would send him to draw pictures of the biggest event in American history since independence. It was the Civil War between the Union and the rebel southern states. Winslow Homer went to Washington, D. C., in 1861. He drew pictures of the campaign of Union Army General George McClellan the next year. His pictures of the war showed many ways that conflicts affect people. 
 Question: Who had the same interest as Window according to the text?

Answer:
his mother.