In this task, you are given a paragraph, and your task is to construct a question from the given passage. Construct question in such a way that (i) it is well explained in the paragraph, (ii) the words may/may not be present in the paragraph, (iii) it should start with what/how/describe. Avoid creating a question that (i) is just relevant to one or two sentences, and (ii) not relevant to passage. 

Input: Consider Input: Blood enters the kidney. The blood travels into the neophrons. Waste is expelled via the neophrons. The waste goes to the bladder in the form of urine. The clean blood exits the kidneys. 

Output: How do kidneys filter blood?


Input: Consider Input: A frog lays eggs in the water. Tadpoles develop inside of the eggs. The eggs hatch. The tadpoles eat and grow. The tadpoles grow legs and form into frogs. The frogs leave the water. 

Output: Describe the life cycle of a frog


Input: Consider Input: Magma rises through cracks in the Earth's crust. The pressure causes plates to move. Magma explodes to the surface. The lava from the eruption cools to form new crust. After several eruptions, the rock builds up and a volcano forms. 


Output: What causs a volcano to erupt?