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

Example Input: Passage: Amines are weak bases due to the presence of a lone pair of electrons on the nitrogen atom. This lone pair can attract the hydrogen atom from a water molecule, causing the bond between it and the oxygen atom to break. The resultant products are the conjugate acid of the amine and the hydroxide ion. Answer: electrons
Example Output: Amines are weak bases due to the presence of a lone pair of what on the nitrogen atom?

Example Input: Passage: Segmented worms include the common earthworm and leeches. Answer: segmented
Example Output: The common earthworm and leeches are examples of what type of worm?

Example Input: Passage: Different pathogens spread in different ways. Some pathogens spread through food. They cause food borne illnesses, which are discussed in a previous concept. Some pathogens spread through water. Giardia lamblia is one example. Water can be boiled to kill Giardia and most other pathogens. Answer: pathogens
Example Output:
Water can be boiled to kill giardia and most other what?