instruction:
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.
question:
Sentence1: Conventional myosin is required for cytokinesis . 
Sentence2: Conventional myosin is required for the final stage of cell division.
answer:
Conventional


question:
Sentence1: Mollusks live in most terrestrial, freshwater, and marine habitats. 
Sentence2: Clams live in freshwater habitats.
answer:
freshwater


question:
Sentence1: when light enters the eye through the pupil , that light falls on the retina. 
Sentence2: Pictures are formed on the retina, and are then transmitted by the optic nerve to the brain.
answer:

retina