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: Leaves make food for the plant. 
Sentence2: Some producers have leaves to help use energy and inorganic molecules.
[EX A]: Leaves

[EX Q]: Sentence1: Thrinaxodon, a small Lystrosaurus Zone cynodont, shows many of the characters of the group. 
Sentence2: Thrinaxodon is from the animal family that eventually evolved into mammals.
[EX A]: Thrinaxodon

[EX Q]: Sentence1: Fossils are the remains of prehistoric life. 
Sentence2: if remains of prehistoric life are found in a place then that place used to be covered by water.
[EX A]:
life