instruction:
This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
question:
Passage: However, excessive hunting and poachers have also contributed heavily to the endangerment, extirpation and extinction of many animals, such as the quagga, the great auk, Steller's sea cow, the thylacine, the bluebuck, the Arabian oryx, the Caspian and Javan tigers, the markhor, the Sumatran rhinoceros, the bison, the North American cougar, the Altai argali sheep, the Asian elephant and many more, primarily for commercial sale or sport. All these animals have been hunted to endangerment or extinction. Question: What do Steller's sea cow, the bluebuck, and the Javan tigers all have in common?
answer:
extinction

question:
Passage: In September 1828 Chopin, while still a student, visited Berlin with a family friend, zoologist Feliks Jarocki, enjoying operas directed by Gaspare Spontini and attending concerts by Carl Friedrich Zelter, Felix Mendelssohn and other celebrities. On an 1829 return trip to Berlin, he was a guest of Prince Antoni Radziwi, governor of the Grand Duchy of Posenhimself an accomplished composer and aspiring cellist. For the prince and his pianist daughter Wanda, he composed his Introduction and Polonaise brillante in C major for cello and piano, Op. 3. Question: What piece did Frederic create specifically for the prince and the prince's daughter, Wanda?
answer:
Introduction and Polonaise brillante in C major for cello and piano, Op. 3

question:
Passage: Plymouth City Council is responsible for waste management throughout the city and South West Water is responsible for sewerage. Plymouth's electricity is supplied from the National Grid and distributed to Plymouth via Western Power Distribution. On the outskirts of Plympton a combined cycle gas-powered station, the Langage Power Station, which started to produce electricity for Plymouth at the end of 2009. Question: Who oversees Plymouth's sewers?
answer:
South West Water