Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Example Input: Romantic love involves ____ people.
Example Output: two

Example Input: Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.
Example Output: no

Example Input: Most children work full-time, seven hours per day, and ____ days a week.
Example Output:
six