Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: A diploid cell is a cell with two chromosomes.

Output: What kind of cell is a cell with two chromosomes?

Input: Consider Input: The pressure of a sample of gas is measured with an open-end manometer.

Output: The pressure of a sample of gas is measured with an open-end what?

Input: Consider Input: The simplest type of battery contains single cell.
Output: The simplest type of battery contains what?