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.

Q: Sentence1: Heterotrophs are living things that cannot make their own food. 
Sentence2: food contains organic molecules.

A: food
****
Q: Sentence1: Genetics is the study and application of principles of inheritance to plants and animals . 
Sentence2: Pedigrees are useful tools for studying Genetics.

A: Genetics
****
Q: Sentence1: Bees are naturalized on every continent except Antarctica. 
Sentence2: With the onset of cold weather, the bees seek overwintering shelter.

A:
Bees
****