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: intense heat has a negative impact on an organism. 
Sentence2: intense heat has a negative impact on plants.
[A]: heat


[Q]: Sentence1: Mammalian predators include the coyote and bobcat. 
Sentence2: a coyote's teeth is important for digestion.
[A]: coyote


[Q]: Sentence1: Deposition landforms also occur forming stalactites and stalagmites . 
Sentence2: Erosion contributes to forming stalactites and stalagmites.
[A]:
forming