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: The City of Charleston Fire Department consists over 300 full-time firefighters. These firefighters operate out of 19 companies located throughout the city: 16 engine companies, two tower companies, and one ladder company. Training, Fire Marshall, Operations, and Administration are the divisions of the department. The department operates on a 24/48 schedule and had a Class 1 ISO rating until late 2008, when ISO officially lowered it to Class 3. Russell (Rusty) Thomas served as Fire Chief until June 2008, and was succeeded by Chief Thomas Carr in November 2008.
How many companies aren't there in the City of Charleston Fire Department?

Passage: Goodman, now disconnected from Marvel, set up a new company called Seaboard Periodicals in 1974, reviving Marvel's old Atlas name for a new Atlas Comics line, but this lasted only a year and a half. In the mid-1970s a decline of the newsstand distribution network affected Marvel. Cult hits such as Howard the Duck fell victim to the distribution problems, with some titles reporting low sales when in fact the first specialty comic book stores resold them at a later date.[citation needed] But by the end of the decade, Marvel's fortunes were reviving, thanks to the rise of direct market distribution—selling through those same comics-specialty stores instead of newsstands.
What company partnered with Marvel in 1974?

Passage: To measure the difficulty of solving a computational problem, one may wish to see how much time the best algorithm requires to solve the problem. However, the running time may, in general, depend on the instance. In particular, larger instances will require more time to solve. Thus the time required to solve a problem (or the space required, or any measure of complexity) is calculated as a function of the size of the instance. This is usually taken to be the size of the input in bits. Complexity theory is interested in how algorithms scale with an increase in the input size. For instance, in the problem of finding whether a graph is connected, how much more time does it take to solve a problem for a graph with 2n vertices compared to the time taken for a graph with n vertices?

How does one measure the simplicity of a computational problem?