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: Cnidarians are invertebrates such as jellyfish and corals. 
Sentence2: Jellyfish and corals are radial, tentacled animals that live mostly in the seas.

SOLUTION: corals

PROBLEM: Sentence1: Babies that are very large or very small at birth are less likely to survive. 
Sentence2: Babies that are very large or very small at birth are less likely to live.

SOLUTION: Babies

PROBLEM: Sentence1: pushing on the pedals of a bike cause that bike to move. 
Sentence2: Well, when riding a bike, human power is used to turn the pedals.

SOLUTION:
pedals