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

Example Input: Rainforests cover less than _ percent of the Earth's surface.
Example Output: two

Example Input: Women are _ times as likely to develop osteoporosis but men can also develop it.
Example Output: four

Example Input: Women are _ times as likely to suffer malaria attacks during pregnancy.
Example Output:
four