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.

Passage: As the initial punk movement dwindled, vibrant new scenes began to coalesce out of a variety of bands pursuing experimental sounds and wider conceptual territory in their work. Many of these artists drew on backgrounds in art and viewed their music as invested in particular political or aesthetic agendas. British music publications such as the NME and Sounds developed an influential part in this nascent post-punk culture, with writers like Jon Savage, Paul Morley and Ian Penman developing a dense (and often playful) style of criticism that drew on critical theory, radical politics and an eclectic variety of other sources.
What happened as the pot-punk movement dwindled?

Passage: The first union was built on campus in 1926 as a campus community center. The unions are still the "living rooms" of campus today and include three locations – the Kansas Union and Burge Union at the Lawrence Campus and Jayhawk Central at the Edwards Campus. The KU Memorial Unions Corporation manages the KU Bookstore (with seven locations). The KU Bookstore is the official bookstore of KU. The Corporation also includes KU Dining Services, with more than 20 campus locations, including The Market (inside the Kansas Union) and The Underground (located in Wescoe Hall). The KU Bookstore and KU Dining Services are not-for-profit, with proceeds going back to support student programs, such as Student Union Activities.
When was KU's last student union constructed?

Passage: The foregoing trees, shrubs and herbs are also more widely distributed in less rich mesic forests that generally occupy coves, stream valleys and flood plains throughout the southern and central Appalachians at low and intermediate elevations. In the northern Appalachians and at higher elevations of the central and southern Appalachians these diverse mesic forests give way to less diverse "northern hardwoods" with canopies dominated only by American beech, sugar maple, American basswood (Tilia americana) and yellow birch and with far fewer species of shrubs and herbs.

What are examples of foregoing trees?