TASK DEFINITION: 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.
PROBLEM: Passage: The Raleigh Parks and Recreation Department offers a wide variety of leisure opportunities at more than 150 sites throughout the city, which include: 8,100 acres (33 km2) of park land, 78 miles (126 km) of greenway, 22 community centers, a BMX championship-caliber race track, 112 tennis courts among 25 locations, 5 public lakes, and 8 public aquatic facilities. The J. C. Raulston Arboretum, an 8-acre (32,000 m²) arboretum and botanical garden in west Raleigh administered by North Carolina State University, maintains a year-round collection that is open daily to the public without charge.

SOLUTION: What has more than 200 sites throughout the city?

PROBLEM: Passage: After the Mexican War of Independence from Spain also, California, Nevada, Arizona, Utah, western Colorado and southwestern Wyoming became part of the Mexican territory of Alta California and most of New Mexico, western Texas, southern Colorado, southwestern Kansas, and Oklahoma panhandle were part of the territory of Santa Fe de Nuevo México. The geographical isolation and unique political history of this territory led to New Mexican Spanish differing notably from both Spanish spoken in other parts of the United States of America and Spanish spoken in the present-day United Mexican States.

SOLUTION: When did other states become part of Colorado?

PROBLEM: Passage: Rajasthani cooking was influenced by both the war-like lifestyles of its inhabitants and the availability of ingredients in this arid region. Food that could last for several days and could be eaten without heating was preferred. The scarcity of water and fresh green vegetables have all had their effect on the cooking. It is known for its snacks like Bikaneri Bhujia. Other famous dishes include bajre ki roti (millet bread) and lashun ki chutney (hot garlic paste), mawa kachori Mirchi Bada, Pyaaj Kachori and ghevar from Jodhpur, Alwar ka Mawa(Milk Cake), malpauas from Pushkar and rassgollas from Bikaner. Originating from the Marwar region of the state is the concept Marwari Bhojnalaya, or vegetarian restaurants, today found in many parts of India, which offer vegetarian food of the Marwari people. 4 Dal-Bati-Churma is very popular in Rajasthan. The traditional way to serve it is to first coarsely mash the Baati then pour pure Ghee on top of it. It is served with the daal (lentils) and spicy garlic chutney. Also served with Besan (gram flour) ki kadi. It is commonly served at all festivities, including religious occasions, wedding ceremonies, and birthday parties in Rajasthan. "Dal-Baati-Churma", is a combination of three different food items — Daal (lentils), Baati and Churma (Sweet). It is a typical Rajasthani dish.

SOLUTION:
What has the scarcity of food that could last for days affected?