Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Brian May and Roger Taylor performed together at several award ceremonies and charity concerts, sharing vocals with various guest singers. During this time, they were billed as Queen + followed by the guest singer's name. In 1998, the duo appeared at Luciano Pavarotti's benefit concert with May performing "Too Much Love Will Kill You" with Pavarotti, later playing "Radio Ga Ga", "We Will Rock You", and "We Are the Champions" with Zucchero. They again attended and performed at Pavarotti's benefit concert in Modena, Italy in May 2003. Several of the guest singers recorded new versions of Queen's hits under the Queen + name, such as Robbie Williams providing vocals for "We Are the Champions" for the soundtrack of A Knight's Tale (2001).
Where did Queen play in 2003 with a famous opera singer?
A: Modena, Italy

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 1744, Burke started at Trinity College Dublin, a Protestant establishment, which up until 1793, did not permit Catholics to take degrees. In 1747, he set up a debating society, "Edmund Burke's Club", which, in 1770, merged with TCD's Historical Club to form the College Historical Society; it is the oldest undergraduate society in the world. The minutes of the meetings of Burke's Club remain in the collection of the Historical Society. Burke graduated from Trinity in 1748. Burke's father wanted him to read Law, and with this in mind he went to London in 1750, where he entered the Middle Temple, before soon giving up legal study to travel in Continental Europe. After eschewing the Law, he pursued a livelihood through writing.
Who did Edmund Burke's Club split from?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Beginning in April 1985, Madonna embarked on her first concert tour in North America, The Virgin Tour, with the Beastie Boys as her opening act. She progressed from playing CBGB and the Mudd Club to playing large sporting arenas. At that time she released two more hit singles from the album, "Angel" and "Dress You Up". In July, Penthouse and Playboy magazines published a number of nude photos of Madonna, taken in New York in 1978. She had posed for the photographs as she needed money at the time, and was paid as little as $25 a session. The publication of the photos caused a media uproar, but Madonna remained "unapologetic and defiant". The photographs were ultimately sold for up to $100,000. She referred to these events at the 1985 outdoor Live Aid charity concert, saying that she would not take her jacket off because "[the media] might hold it against me ten years from now."
How much was Madonna's nude photos were finally sold for?
A: up to $100,000

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Animals typically use the color green as camouflage, blending in with the chlorophyll green of the surrounding environment. Green animals include, especially, amphibians, reptiles, and some fish, birds and insects. Most fish, reptiles, amphibians, and birds appear green because of a reflection of blue light coming through an over-layer of yellow pigment. Perception of color can also be affected by the surrounding environment. For example, broadleaf forests typically have a yellow-green light about them as the trees filter the light. Turacoverdin is one chemical which can cause a green hue in birds, especially. Invertebrates such as insects or mollusks often display green colors because of porphyrin pigments, sometimes caused by diet. This can causes their feces to look green as well. Other chemicals which generally contribute to greenness among organisms are flavins (lychochromes) and hemanovadin. Humans have imitated this by wearing green clothing as a camouflage in military and other fields. Substances that may impart a greenish hue to one's skin include biliverdin, the green pigment in bile, and ceruloplasmin, a protein that carries copper ions in chelation.
What is another name for hemanovadin?
A:
unanswerable