This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
--------
Question: In Hong Kong, the Supreme Court of Hong Kong (now known as the High Court of Hong Kong) was the final court of appeal during its colonial times which ended with transfer of sovereignty in 1997. The final adjudication power, as in any other British Colonies, rested with the Judicial Committee of the Privy Council (JCPC) in London, United Kingdom. Now the power of final adjudication is vested in the Court of Final Appeal created in 1997. Under the Basic Law, its constitution, the territory remains a common law jurisdiction. Consequently, judges from other common law jurisdictions (including England and Wales) can be recruited and continue to serve in the judiciary according to Article 92 of the Basic Law. On the other hand, the power of interpretation of the Basic Law itself is vested in the Standing Committee of the National People's Congress (NPCSC) in Beijing (without retroactive effect), and the courts are authorised to interpret the Basic Law when trying cases, in accordance with Article 158 of the Basic Law. This arrangement became controversial in light of the right of abode issue in 1999, raising concerns for judicial independence.

Answer: When did Britain formally surrender sovreignty over Hong Kong?

Question: The elections of 2010 resulted in a victory for the military-backed Union Solidarity and Development Party. Various foreign observers questioned the fairness of the elections. One criticism of the election was that only government sanctioned political parties were allowed to contest in it and the popular National League for Democracy was declared illegal. However, immediately following the elections, the government ended the house arrest of the democracy advocate and leader of the National League for Democracy, Aung San Suu Kyi, and her ability to move freely around the country is considered an important test of the military's movement toward more openness. After unexpected reforms in 2011, NLD senior leaders have decided to register as a political party and to field candidates in future by-elections.

Answer: What was the name of the winning unit in the 2010 elections in Burma ?

Question: Avialans diversified into a wide variety of forms during the Cretaceous Period. Many groups retained primitive characteristics, such as clawed wings and teeth, though the latter were lost independently in a number of avialan groups, including modern birds (Aves). While the earliest forms, such as Archaeopteryx and Jeholornis, retained the long bony tails of their ancestors, the tails of more advanced avialans were shortened with the advent of the pygostyle bone in the group Pygostylia. In the late Cretaceous, around 95 million years ago, the ancestor of all modern birds also evolved a better sense of smell.

Answer:
During which time period did avialans diversify into a wide variety of forms?