input question: Answer this question: what is a constant in math?????
output answer: A mathematical constant is a special number , usually a real number , that is "significantly interesting in some way".

input question: Answer this question: when does air bag deploy????
output answer: It is an occupant restraint system consisting of a flexible fabric envelope or cushion designed to inflate rapidly during an automobile collision .

input question: Answer this question: how many presidents of the us????
output answer: There have been 43 people sworn into office, and 44 presidencies, as Grover Cleveland served two non-consecutive terms and is counted chronologically as both the 22nd and 24th president.

input question: Answer this question: what composer used sound mass????
output answer:
A very early example is the opening of Jean-Fery Rebel 's ballet Les Elemens (173738), where chaos is represented by a gradually cumulating orchestral cluster of all seven notes of the D minor scale (Henck 2004, pp. 5254).