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: Fossil fuels come in ____ major forms coal, oil and natural gas.
Example Output: three

Example Input: Spiders have eight jointed legs and ____ body parts.
Example Output: two

Example Input: Single lambs weigh about ____ pounds, twins, four to five pounds.
Example Output:
eight