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.

Example Input: Sentence1: Runoff water is wasted water. 
Sentence2: Streams may start with wasted water.
Example Output: wasted

Example Input: Sentence1: Petals attract pollinators to the flower. 
Sentence2: Something a daisy has attracts pollinators.
Example Output: attract

Example Input: Sentence1: If the wire heats up it can damage the insulation or cause a fire. 
Sentence2: electrical current running through a wire can damage the insulation or cause a fire.
Example Output:
can