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: decomposition increases the amount of nutrients in the soil. 
Sentence2: decomposition increases the amount of cations.

SOLUTION: amount

PROBLEM: Sentence1: Sperm pass out of the body through the urethra. 
Sentence2: Sperm travel from the testicles through the vas deferens to the seminal vesicles and the prostate.

SOLUTION: Sperm

PROBLEM: Sentence1: Macroevolution is evolution over geologic time above the level of the species. 
Sentence2: Microevolution leading to macroevolution, discussed earlier, is one example.

SOLUTION:
evolution

