Here's a short story:

Do you know more and more Chinese artists have made regular donations to charity or put their efforts into charity work in China? Here let's know some of them. Faye Wong and her husband Li Yapeng started the Yan Ran Angel Foundation for harelipped children three years ago. It was named after their daughter. Its purpose is to help children under 14 to cure their harelips. The couple donated one million yuan (about $ 133,000) to start the organization. Cong Fei was born in a poor family. He became a successful singer in Shenzhen. He helped 178 poor students and disabled people for more than 10 years. Before he died of an illness at the age of 37 in 2006, he decided to donate his cornea to people with eye problems. He helped six people see the world. Guan Mucun has donated money to Project Hope to help poor students finish primary education. Thirty of these poor students have already finished high school with her support. Guan has also helped with charity work for environment protection, HIV/AIDS prevention, blood donation and "Mother Water". Guan had an unlucky childhood: her mother died when she was only 10 years old. With the help of the government and her neighbours, she grew up and was successful as a famous singer. Action star Jackie Chan is a wholehearted supporter of charities including UNICEF, Operation Smile and his own Jackie Chan Charitable Foundation. In 2007, he used much of his spare time to visit the farthest parts of China on his Dragon's Heart Charity Missions. The Dragon's Heart Foundation aims to meet the needs of poor children and the elderly in the hardest-to-reach areas of the country. Chan has made several trips to these poor villages, bringing warm clothing, wheelchairs and school supplies, and helping to build schools. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: what organization did Faye Wong start with her husband?
Guess: Yan Ran Angel Foundation

Question: what was it named after?
Guess: their daughter

Question: does it help children over 14?
Guess: no

Question: what does it help children under 14 with?
Guess: harelips

Question: what is the name of Jackie Chan's charitable organization?
Guess: Jackie Chan Charitable Foundation

Question: does he support other charities?
Guess: yes

Question: when did he go on the Dragon's Hearth Charity Missions?
Guess: In 2007

Question: how old was Guan when her mother died?
Guess: 10

Question: which project did she donate money to?
Guess: Project Hope

Question: who does that help?
Guess: poor students

Question: how many have finished school because of this?
Guess: Thirty

Question: was cong fei rich?
Guess: Not untill later in life

Question: what was his profession?
Guess: a singer

Question: how old was he when he died?
Guess: 37

Question: how many people did he help with eye problems?
Guess: six

Now answer the following question in the same format.

Question: what did he donate to people with eye problems?

his cornea