In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: Right now in China, talks on the street have been about the strange weather and it's raising a lot of concerns. A heavy haze has blanketed many cities in the northern and southern parts of the country in part of an unusual weather system that's descended on the nation. The haze stretches over a vast area, from Hebei and Shan-dong Provinces in the north all the way to Zhejiang, Anhui, Jiangsu, Hunan and Fujian provinces in the south. At its worst, the smog is reducing visibility to less than 200 meters and disrupting traffic, both on the ground and in the air. The weather front has also led many to worry about the possible health impacts. Many cities are waking up to another day covered by a dense haze. In Beijing, drivers have to keep their lights on even though it's already past eight o'clock in the morning. Even driving at very slow speeds, the roads can still be very dangerous. In some of the worst hit areas, drivers can't even tell the colors of traffic signals. Authorities have stepped in to close off many highways across the troubled region. In Shandong Province, the highways that are open are backed up for miles. And traffic police have stepped up their patrols. In the region's airports, flights information boards have gone red. A huge number of flights have been delayed or cancelled, nearly three hundred in Beijing alone, leaving thousands of passengers stranded. Some are more frustrated than impatient. Passenger from Jinan airport, Shangdong province, said: "I've been waiting for more than five hours. It's Mother Nature, so there's really nothing we can do." The airport is urging passengers to confirm with their carrier whether their flight will still take off as scheduled. Back on the city streets, people are wearing breathing masks to get free from any ill effects. Fog has cleared a little in Shanghai. But damage has already been done. Shanghai resident said: "I've been wearing the mask, but still, my throat feels sour and itchy. I think it's because of the weather." The weather forecast predicts a cold front is about to sweep across central and eastern China tomorrow. Many are hoping that this will clear away the depressive haze as well as the harm it brings.
Answer: heavy fog
The harm the smog caused didn't include _ .

Article: Hercule Poirot looked over the small gate which gave admission to Pine Crest. It was a modern nicely-built house. It was on a hill top, and the hill top was planted with a few sparse pines. It had a small neat garden and a large elderly man was watering with a big tin. Spence's hair was now grey all over. He had not shrunk much in girth , though. He stopped watering and looked at the visitor at the gate. Hercule Poirot stood there without moving. "God bless my soul," said Spence. "It must be. It can't be but it is. Yes, it must be Hercule Poirot!" "Aha," said Poirot, "you remember me. I'm grateful." Spence abandoned the watering can and came down to the gate. "What brings you down here?" "What has brought me to many places in my time," said Poirot, "and what once a good many years ago brought you to see me. Murder, Spence." "I'm done with murder since I retired," said Spence, "except in the case of weeds. Killing weeds is never easy as you think, something's always wrong. How did you know where to find me?" he asked as he opened the gate and Poirot passed through. "You sent me a Christmas card. It had your new address on it." "Ah yes, so I did. I'm old-fashioned, you know, I like to send round cards at Christmas time to a few old friends. I'm an old man now." "We both are." "Not much grey in your hair," said Spence. "I take care of my hair with a bottle," said Poirot. "There is no need to appear in public with grey hair unless you wish to do so. By the way, why have you come to live in Woodleigh Common?" "As a matter of fact, I came here to join forces with a sister of mine. She lost her husband, her children are married and living abroad. So I moved in here. Pensions don't go far nowadays, but we do comfortably living together."
Answer: Poirot's recent life
From their dialogue, we can learn about _ .

Article: A few days ago, I was sitting in a Thai restaurant enjoying a meal when I got on a phone call from a friend I hadn't spoken to in a long time. In my enthusiasm and excitement, I talked quite louder than usual voice and in Spanish, my mother tongue. A few minutes into the call, an old lady sitting at the table beside mine got up, seemingly offended, and asked the restaurant staff to relocate a table as far away as possible from this man who seemed to be impolite. I sank in my seat out of embarrassment. I ended the call soon afterwards and felt the urge to apologize. Before getting up, I looked around to see where she was and she was at the table farthest away from me. I noticed that the lady was alone and staring out the window. I found a tinge of sadness or anxiety and perhaps a desire for aloneness and peace. But I had obviously destroyed it minutes earlier. Right then I abandoned my plan for a conventional apologetic gesture. Seeing those funny smile cards in my wallet, I took one out and wrote some words to express my apology. On signing my restaurant bill, I asked a waiter to secretly charge the lady's meal to me and hand her the smile card instead of her bill. Did she take it the wrong way, I wondered? Did she get confused? Did she refuse the anonymous offer? And so on. I just waited and felt nervous to learn the outcome. To my pleasant surprise, things turned out the best possible way. The waiter approached me in a joy, telling me, "In the many times she had dined here before, I had never seen the old lady smile as she did when receiving the smile card and the $0 bill. She thanked me even though I explained that someone else did the job."
Answer: the author's loud voice
The old lady changed her seat mainly because of _ .