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: Among families with children the average number of offspring is 1.8.
Sentence2: information in an organism's chromosomes cause genetic traits to be passed down to that organism's children.
[EX A]: children

[EX Q]: Sentence1: Finally, the fluid in the nephron reaches a collecting duct .
Sentence2: fluid in the kidneys collect into ducts.
[EX A]: fluid

[EX Q]: Sentence1: Birds have relatively large brains and a high level of intelligence.
Sentence2: Animals with feathers have brains.
[EX A]:
brains