TASK DEFINITION: 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.
PROBLEM: Passage: According to Sun Jiadong, the chief designer of the navigation system, "Many organizations have been using our system for a while, and they like it very much." Question: What did Sun Jiadong have to say about the BeiDou navigation system?

SOLUTION: "Many organizations have been using our system for a while, and they like it very much."

PROBLEM: Passage: Chopin made his last public appearance on a concert platform at London's Guildhall on 16 November 1848, when, in a final patriotic gesture, he played for the benefit of Polish refugees. By this time he was very seriously ill, weighing under 99 pounds (i.e. less than 45 kg), and his doctors were aware that his sickness was at a terminal stage. Question: Who were the beneficiaries of his last public concert?

SOLUTION: Polish refugees.

PROBLEM: Passage: The Santa Monica Looff Hippodrome (carousel) is a National Historic Landmark. It sits on the Santa Monica Pier, which was built in 1909. The La Monica Ballroom on the pier was once the largest ballroom in the US and the source for many New Year's Eve national network broadcasts. The Santa Monica Civic Auditorium was an important music venue for several decades and hosted the Academy Awards in the 1960s. McCabe's Guitar Shop is still a leading acoustic performance space as well as retail outlet. Bergamot Station is a city-owned art gallery compound that includes the Santa Monica Museum of Art. The city is also home to the California Heritage Museum and the Angels Attic dollhouse and toy museum. Question: What year was the Sanat Monica Pier buildt?

SOLUTION:
1909