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: Annelids have the amazing capacity to regrow segments that break off. 
Sentence2: Earthworms can regrow segments that break off.

SOLUTION: break

PROBLEM: Sentence1: Plants use unsaturated fatty acids to store energy. 
Sentence2: Plants and fish contain fatty acids.

SOLUTION: Plants

PROBLEM: Sentence1: Cytokinesis is the final stage of cell division in eukaryotes as well as prokaryotes. 
Sentence2: Cytokinesis is the final stage of cell division in plants.

SOLUTION:
Cytokinesis