In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Example solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

Problem: Passage: As of the 2000 Census, there were 49,321 people, 19,677 households, and 11,058 families residing in the city. The population density was 2,563.0 per square mile (989.8/km2). There were 20,838 housing units at an average density of 1,082.8 per square mile (418.2/km2).The city's racial makeup was 93.4% White, 0.9% African American, 2.8% Native American, 1.0% Asian, 0.1% Pacific Islander, 0.6% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 1.9% of the population. The top six ancestry groups were Norwegian (36.4%), German (34.7%), Irish (10.6%), French (6.5%), Polish (6.2%), English (6.1%). There were 21.4% of the population under the age of 18, 22.9% from 18 to 24, 27.7% from 25 to 44, 18.3% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 28 years. For every 100 females, there were 102.0 males. For every 100 females age 18 and over, there were 100.2 males.Of the 19,677 households, 28.7% had children under the age of 18 living with them, 43.2% were married couples living together, 10.0% had a female householder with no husband present, and 43.8% were non-families. 31.4% of all households were made up of individuals and 8.5% had someone living alone who was 65 years of age or older. The average household size was 2.3 and the average family size was 3.0. The median income for a household in the city was $34,194, and the median income for a family was $47,491. Males had a median income of $30,703 versus $21,573 for females. The per capita income for the city was $18,395. About 9.3% of families and 14.6% of the population were below the poverty line, including 14.6% of those under age 18 and 7.7% of those age 65 or over.The median household income was $34,194, and the median family income was $47,491. Males had a median income of $30,703 versus $21,573 for females. The city's per capita income was $18,395. About 9.3% of families and 14.6% of the population were below the poverty line, including 14.6% of those under age 18 and 7.7% of those age 65 or over.
Solution: What is the median income for females in the city where 28.7% of households had children under the age of 18 living with them?