TASK DEFINITION: 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.
PROBLEM: Sentence1: the force of water against the seed coat causes a root to emerge from a seed. 
Sentence2: Germination depends on the seed coat.

SOLUTION: coat

PROBLEM: Sentence1: Cnidarians have a hydrostatic skeleton. 
Sentence2: Jellyfish have a hydrostatic skeleton.

SOLUTION: hydrostatic

PROBLEM: Sentence1: an anemometer is used to measure wind speed. 
Sentence2: anemometers can measure hurricanes.

SOLUTION:
anemometer