Context: The first satellite, BeiDou-1A, was launched on October 31, 2000. The second satellite, BeiDou-1B, was successfully launched on December 21, 2000. The last operational satellite of the constellation, BeiDou-1C, was launched on May 25, 2003.

Question: When was the first satellite for the BeiDou-1 system launched?
Answer: October 31, 2000

Question: What was the first satellite for the BeiDou-1 system called?
Answer: BeiDou-1A

Question: When was the second satellite for the BeiDou-1 system launched?
Answer: December 21, 2000

Question: What was the second satellite for the BeiDou-1 system called?
Answer: BeiDou-1B

Question: When was the last satellite for the BeiDou-1 system launched?
Answer: May 25, 2003

Question: In what year was the fifth and final satellite launched? 
Answer: Unanswerable

Question: In what month was the fourth and final satellite launched?
Answer: Unanswerable

Question: In what year was the first satellite, BeiDou-1C, launched?
Answer: Unanswerable

Question: In what month was the first satellite, BeiDou-1X, launched?
Answer: Unanswerable

Question: The second satellite was named BeiDou-12b and was launched in December of what year?
Answer: Unanswerable