Definition: Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.
Input: Sentence1: Saliva contributes more than 70 percent of the liquid in the rumen. 
Sentence2: Food is easier to chew because it is moistened by liquid.

liquid