TASK DEFINITION: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
PROBLEM: original question: What class of drugs is [Vitamin D]?
answer: bisphosphonate, nicotinic acids, copper absorption inhibitor...
answer type: Drug class.
auxiliary information: Vitamin D refers to a group of fat-soluble secosteroids responsible for enhancing intestinal absorption of calcium, iron, magnesium, phosphate and zinc. In humans, the most important compounds in this group are vitamin D‚ÇÉ and vitamin D‚ÇÇ. Cholecalciferol and ergocalciferol can be ingested from the diet and from supplements. Very few foods contain vitamin D; synthesis of vitamin D in the skin is the major natural source of the vitamin. Dermal synthesis of vitamin D from cholesterol is dependent on sun exposure. Vitamin D from the diet or dermal synthesis from sunlight is biologically inactive; activation requires enzymatic conversion in the liver and kidney. Evidence indicates the synthesis of vitamin D from sun exposure is regulated by a negative feedback loop that prevents toxicity, but because of uncertainty about the cancer risk from sunlight, no recommendations are issued by the Institute of Medicine, for the amount of sun exposure required to meet vitamin D requirements. Accordingly, the Dietary Reference Intake for vitamin D assumes no synthesis occurs and all of a person's vitamin D is from food intake, although that will rarely occur in practice.

SOLUTION: [Vitamin D] is listed in what class of drugs?

PROBLEM: original question: What holiday is featured in the religion that has the belief of [Trinity]?
answer: the twelfth, sunday before lent (eastern), santiago apostol's festivity...
answer type: Holiday.
auxiliary information: The Christian doctrine of the Trinity defines God as three consubstantial persons, expressions, or hypostases: the Father, the Son, and the Holy Spirit; "one God in three persons". The three persons are distinct, yet are one "substance, essence or nature". In this context, a "nature" is what one is, while a "person" is who one is. According to this central mystery of most Christian faiths, there is only one God in three persons: while distinct from one another in their relations of origin and in their relations with one another, they are stated to be one in all else, co-equal, co-eternal and consubstantial, and "each is God, whole and entire". Accordingly, the whole work of creation and grace is seen as a single operation common to all three divine persons, in which each shows forth what is proper to him in the Trinity, so that all things are "from the Father", "through the Son" and "in the Holy Spirit". Terms such as "monotheism" and "incarnation", are not found in the Bible, but they denote theological concepts concerning Christian faith that are believed to be contained in the Bible. Even the term "Bible" is not found in the Bible. "Trinity" is another such term.

SOLUTION: The religion that has the belief of [Trinity] features what holiday?

PROBLEM: original question: Which concert tour includes [Ghost Stories, London]?
answer: ghost stories tour
answer type: Concert tour.
auxiliary information: Ghost Stories, London is the concert of Coldplay at the Royal Albert Hall.

SOLUTION:
[Ghost Stories, London] is a part of which concert tour?