In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: Screws provide at least _ times the holding power of nails.

Output: seven

Input: Consider Input: Prokaryotes mean they have _ nucleus in which they store genetic material.

Output: no

Input: Consider Input: Heat pumps give off _ fumes or harmful products of combustion.
Output: no