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: bacteria can cause people to become ill. 
Sentence2: bacteria can cause people to die.

SOLUTION: bacteria

PROBLEM: Sentence1: With a spatula, fold in flour mixture. 
Sentence2: a sifter is used for separating flour.

SOLUTION: flour

PROBLEM: Sentence1: transpiration is when water vapor moves from plants into the atmosphere. 
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

SOLUTION:
from