Insomnia: A condition of unsatisfactory quality of sleep that lasts for a long time. Based on this definition, which of the following conditions can be considered a diagnosis of insomnia? ['Grandma Wang is 71 years old. She only sleeps 4-5 hours a day. She wakes up before morning light, no matter how she keeps her asleep. This has been the case since she retired. There are already 10 Years.', 'Xu is a very capable young man who works hard every night. He can only sleep for 3 or 4 hours and can accomplish the assigned tasks outstandingly.', "Xiao Liu is a young nurse. One day she woke up in the middle of the night and did not fall asleep again. The next day, she almost made a mistake at work. Fortunately, she was discovered by colleagues in time. After that, she was particularly worried about going to bed every day. But it's always difficult to fall asleep. She is afraid to ask for various reasons to ask for leave if she makes another mistake. Now she hasn't gone to work for a month.", 'Zhang and Song broke up. After the breakup, Zhang Daniel, who was in pain, did n’t eat or drink, and ignored anyone. He kept himself in the house all day, and did n’t sleep at night. It has been more than a week.']