In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
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Question: Article: A few days ago we - that's me and the husband - took a cab to the station. Chat with the driver fell to the wrong of cyclists, and the misunderstanding of the road rules. So far as the rules of the road go, there seems to be one basic principle: when you are driving a car you hate bikes, when you are riding a bike you hate cars (and I guess walkers hate everyone). There is an obvious difference of viewpoint built in here. It wasn't until I started to drive a car (almost 20years after I had first rode a bike) that I actually realized that you could not see a cyclist at night without lights. In fact I now want to shout at late night cyclists without lights(like motortists once did at me): "You'll get killed, sunshine, I can't see you." The problem is that cyclists do ride headlong into danger. It's not just not having lights. It's biking on pavements (and so threatening to injure a load of innocent walkers in the process) and biking down one-way streets the wrong way. I admit that I do bike the wrong way down a one-way street sometimes. My feeble defense is that I try always to do it as if I know I was doing wrong. That is slowly, with an apologetic look on the face, and ready to get off at any minute. I can't bear the guys (usually, but not always it is guys) who do it as if they owned the place, and at high speed. So cyclists are not entirely innocent. But they are among the disadvantaged groups, because the bottom line is that a car or a lorry can kill a cyclist and not the other way around.
Answer: Not until she became a driver herself.

Answer: When did the writer realize the danger for late night cyclists without lights?

Question: Article: My daughter and I collected the empty cans and bottles in our home this morning.We had 6 full garbage bags later so I knew we would be spending a bit more of time at the recycling center.When we got there,a man and his kids were also doing the morning recycling and were using two of the four machines to recycle their plastic and cans.Luckily,we were able to use the 2 remaining machines. Of course,there were others that came,but when they saw the two families with garbage bags full of recycled things,they quickly left.However,one woman came in with just 5 cans and looked as if she was in a hurry.So I stopped what I was doing and let her in to recycle her cans.Of course,she was grateful,and it felt good to let her go ahead of me.But that was not the whole story. My daughter and I continued to work through the bags,but the plastic recycling machine stopped working because it was full.My daughter was left with nothing to do.The other family was still using the other two plastic recycling machines,but it seemed that they were almost done.I just told my daughter we would have to wait until they were done.But the man of the other family came through with another act of kindness.He offered to let us go ahead of him.I was really surprised,because we had more than 5 bottles,but he didn't seem to mind.I happily accepted _ It was great to give and then to get an act of kindness in turn.It was small,I didn't expect it,but it surely brightened up my day.
Answer: Because the woman seemed to be in a hurry.

Answer: Why did the writer let the woman recycle her cans first?

Question: Article: Earth Hour is organized by WWF. With almost 5 million supporters and a global network in over 100 countries, it's one of the world's largest and most respected independent conservation organizations. WWF's mission is to stop the degradation of the Earth's natural environment and build a future where people live in harmony with nature. Earth Hour started on March 31st, in 2007 in Sydney, Australia when 2.2 million individuals and more than 2,000 businesses turned their lights off for one hour to take a stand against climate change. Only a year later Earth Hour had become a global movement with more than 50 million people across 35 countries participating. Global landmarks such as the Sydney Harbour Bridge, CN Tower in Toronto, Golden Gate Bridge in San Francisco, and Rome's Colosseum, all stood in darkness, as symbols of hope for a cause that grows more urgent by the hour. In March 2009, hundreds of millions of people took part in the third Earth Hour. Over 4,000 cities in 88 countries officially switched off to pledge their support for the planet, making Earth Hour 2009 the world's largest movement to stop global climate change. On Saturday 27 March, Earth Hour 2010 became the biggest Earth Hour ever. A record 128 countries and territories joined the global display of climate action. Iconic buildings and landmarks from Asia Pacific to Europe and Africa to the Americas switched off. People across the world from all walks of life turned off their lights and came together in celebration and contemplation of the one thing we all have in common--our planet. Earth Hour will continue to be a call to action to every individual, a call to stand up, to take responsibility and lead the global journey to a sustainable future.
Answer: To support WWF's work.

Answer:
What is the main purpose of Earth Hour?