Question: Using histological stains on expectorated samples from phlegm (also called "sputum"), scientists can identify MTB under a microscope. Since MTB retains certain stains even after being treated with acidic solution, it is classified as an acid-fast bacillus. The most common acid-fast staining techniques are the Ziehl–Neelsen stain and the Kinyoun stain, which dye acid-fast bacilli a bright red that stands out against a blue background. Auramine-rhodamine staining and fluorescence microscopy are also used.
Is there an answer to this question: What become blue when stained?

Answer: unanswerable


Question: In 2000, out of 45,693 households, 23.0% had children under the age of 18 living with them, 37.8% were married couples living together, 7.5% had a female householder with no husband present, and 52.5% were nonfamilies. 35.5% of households were made up of individuals and 6.6% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.90. The age distribution was 16.8% under 18, 26.8% from 18 to 24, 31.2% from 25 to 44, 17.3% from 45 to 64, and 7.9% were 65 or older. The median age was 28 years. For every 100 females there were 97.7 males; while for every 100 females age 18 and over, there were 96.4 males.
Is there an answer to this question: What is the median age for the city of Ann Arbor?

Answer: 28


Question: There are also Christian movements which cross denominational lines and even branches, and cannot be classified on the same level previously mentioned forms. Evangelicalism is a prominent example. Some of those movements are active exclusively within Protestantism, some are Christian-wide. Transdenominational movements are sometimes capable of affecting parts of the Roman Catholic Church, such as does it the Charismatic Movement, which aims to incorporate beliefs and practices similar to Pentecostals into the various branches of Christianity. Neo-charismatic churches are sometimes regarded as a subgroup of the Charismatic Movement. Nondenominational churches often adopt, or are akin to one of these movements.
Is there an answer to this question: What is a prominent example of a movement which crosses over denominational lines?

Answer: Evangelicalism


Question: American Idol employs a panel of judges who critique the contestants' performances. The original judges were record producer and music manager Randy Jackson, pop singer and choreographer Paula Abdul and music executive and manager Simon Cowell. The judging panel for the most recent season consisted of country singer Keith Urban, singer and actress Jennifer Lopez, and jazz singer Harry Connick, Jr. The show was originally hosted by radio personality Ryan Seacrest and comedian Brian Dunkleman, with Seacrest continuing on for the rest of the seasons.
Is there an answer to this question: Which judge is a jazz singer?

Answer:
Harry Connick, Jr.