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.

[EX Q]: Sentence1: DNA is made up of nucleotides. 
Sentence2: Mutations can change the structure of DNA.
[EX A]: DNA

[EX Q]: Sentence1: Excretion is the process of removing wastes and excess water from the body. 
Sentence2: parasites remove waste from their bodies.
[EX A]: wastes

[EX Q]: Sentence1: Bees are the main pollinator. 
Sentence2: Plants attract bees with nectar.
[EX A]:
Bees