Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Wyoming, Ohio (CNN) After the bagpiper led 2,500 mourners out of the high school but before Otto Warmbier was laid to rest Thursday, one of his former counselors stopped to remember the 22-year-old who died last week after 17 months of detention in North Korea. The tight-knit community near Cincinnati had spent nearly a year and a half "holding our breaths, praying for a quick release, rallying around the Warmbiers as much as possible" amid a dearth of information about the college student's fate, said Cynthia Meis, director of college counseling, who joined the Wyoming High School faculty in 2012."Everything they say about Otto is very true. He was the nicest kid," ex-classmate saidOtto Warmbier died days after his return from 17 years months' detention in North Korea 
 Question:In a news conference before Warmbier's death, they said they found no evidence of botulism, casting doubt on _'s claim.

North Korea