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: Mitosis is cell division. 
Sentence2: mitosis often causes growth.
[EX A]: Mitosis

[EX Q]: Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids. 
Sentence2: A pregnant woman will pass antibodies to the fetus.
[EX A]: antibodies

[EX Q]: Sentence1: White eye color is a recessive trait. 
Sentence2: crossing two living things with white eye color causes their offspring to have white eye color.
[EX A]:
White