Who invented Calculus?
Calculus was developed independently by Isaac Newton and Gottfried Wilhem Leibniz at around the same time.  Later work by Cauchy, Weierstrass, and Riemann brought full rigor to Calculus as a distinct branch of mathematics.
Instruction: Who invented Calculus?
Context: 
Response: Calculus was developed independently by Isaac Newton and Gottfried Wilhem Leibniz at around the same time.  Later work by Cauchy, Weierstrass, and Riemann brought full rigor to Calculus as a distinct branch of mathematics.