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.

Input: Consider Input: Airplanes still fly four to ____ times faster than zeppelins.

Output: five


Input: Consider Input: Environmentalists warn that ____ turtle species are in severe decline from over-exploitation.

Output: six


Input: Consider Input: Aridity is controlled by ____ climatic anomalies.


Output: three