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: Bees feed on nectar and pollen. 
Sentence2: Plant reproduction often requires bees and nectar.
[EX A]: Bees

[EX Q]: Sentence1: Most major Atlantic hurricanes start as small disturbances moving westward off Africa. 
Sentence2: When something that starts as a small disturbance moving westward off Africa then moves over land, it will decrease in strength.
[EX A]: Africa

[EX Q]: Sentence1: All gravitational forces are attractive, there is no repulsive gravitational force. 
Sentence2: the mass of an object causes the attractive force exerted by that object.
[EX A]:
attractive