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: friction causes the temperature of an object to increase. 
Sentence2: internal combustion engines get hot.

SOLUTION: temperature

PROBLEM: Sentence1: if an object is made of a material then that object has the properties of that material. 
Sentence2: An object is an item in the real world.

SOLUTION: object

PROBLEM: Sentence1: using cell phones can cause people to become distracted. 
Sentence2: People who are distracted are hazards.

SOLUTION:
distracted