You will be given a definition of a task first, then some input of the task.
You need to read the given passage and construct a question about the information present in the passage. The question should be answerable from the passage. Most importantly, only those questions are allowed whose answers cannot be determined from a single sentence. Do not generate questions that require only a single sentence to answer. Instead, try to combine two sentences and create a question from that combination. Do not create open-ended questions, i.e., the answers to them cannot be found precisely from the information provided in the passage.

Paragraph- Sent 1: LONDON, England (CNN) -- Last year's inaugural Prix Pictet photography award for environmental sustainability produced a stunning shortlist of photos.
Sent 2: Ed Kashi has documented the impact oil has made on the Niger Delta in Africa.
Sent 3: This year is no different with 12 photographers in the running for the first prize of 100,000 CHF ($97,500).
Sent 4: The theme in 2009 is described simply as "Earth."Sent 5: The aim is to highlight how man exploits the planet's resources and how this impacts the landscapes and communities surrounding them.
Sent 6: In an extraordinary series of photos Canadian Christopher Anderson captures how the quest for raw materials affects Venezuela.
Sent 7: In "The Diminishing Present," Portuguese-born Edgar Martins records forest landscapes in the moments before they are engulfed by flames.
Sent 8: In "Curse of the Black Gold: 50 Years of Oil in the Niger Delta," Ed Kashi captures the impact of the oil industry on Nigeria's environment and people since it was first discovered five decades ago.
Sent 9: Kashi, an American photojournalist, spent three years compiling his photos of the Niger Delta, making a total of five trips to the troubled region.
Sent 10: Kashi told CNN: "It was truly one of the most graphic examples of economic inequity that I have ever seen.
Sent 11: Especially with the backdrop of hundreds of billions of oil wealth that has been generated over the previous 50 years."Sent 12: As a result of his work, Kashi says that his photos are now being used by universities and NGOs to raise awareness to try and effect change.
Sent 13: To him, this has been one of the most gratifying and exciting by-products of his work.
Output:
How long did it take Kashi to compile photos of the Niger Delta and what is being done with his photos now?