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: Speed is in miles per hour and distance is in miles with yards as a sub-measure. 
Sentence2: Speedometers are used to give a driver feedback on how many miles per hour their vehicle goes.

per