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: Blood type is important for medical reasons. 
Sentence2: Type O is important for medical reasons.
answer:
important


question:
Sentence1: Plants exhibit phototropism, or growing toward a light source. 
Sentence2: Phototropism means growing toward the energy of light.
answer:
phototropism


question:
Sentence1: ink is used for hiding from predators by octopuses. 
Sentence2: Octopuses are particularly preyed upon by eels in all shapes and sizes.
answer:

octopuses