Instructions: This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
Input: Passage: Building activity occurred in numerous noble palaces and churches during the later decades of the 17th century. One of the best examples of this architecture are Krasinski Palace (16771683), Wilanow Palace (16771696) and St. Kazimierz Church (16881692). The most impressive examples of rococo architecture are Czapski Palace (17121721), Palace of the Four Winds (1730s) and Visitationist Church (facade 17281761). The neoclassical architecture in Warsaw can be described by the simplicity of the geometrical forms teamed with a great inspiration from the Roman period. Some of the best examples of the neoclassical style are the Palace on the Water (rebuilt 17751795), Krolikarnia (17821786), Carmelite Church (facade 17611783) and Evangelical Holy Trinity Church (17771782). The economic growth during the first years of Congress Poland caused a rapid rise architecture. The Neoclassical revival affected all aspects of architecture, the most notable are the Great Theater (18251833) and buildings located at Bank Square (18251828).
Output:
When did building activity occur on Banki Palace?