Given a scientific passage and an answer, generate a question for the given answer.

Input: Consider Input: Passage: rates The rates at which reactants are consumed and products are formed during chemical reactions vary greatly. We can identify five factors that affect the rates of chemical reactions: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst. Answer: catalyst

Output: The presence of what, which acts as a trigger, affects the rate of chemical reaction?

Input: Consider Input: Passage: The electron cloud of a helium atom contains two electrons, which can normally be expected to be equally distributed spatially around the nucleus. However, at any given moment the electron distribution may be uneven, resulting in an instantaneous dipole. This weak and temporary dipole subsequently influences neighboring helium atoms through electrostatic attraction and repulsion. It induces a dipole on nearby helium atoms (see Figure below ). Answer: an instantaneous dipole

Output: A weak and temporary dipole that influences nearby atoms through electrostatic attraction and repulsion is known as what?

Input: Consider Input: Passage: Electromagnetic waves that are commonly called light fall roughly in the middle of the electromagnetic spectrum. Light includes infrared light, visible light, and ultraviolet light. Answer: infrared, visible, ultraviolet
Output: What are 3 types of light?