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: heating an egg causes a chemical reaction in the egg. 
Sentence2: Insects hatch from eggs.
answer:
egg


question:
Sentence1: a circle graph can be used to display percents. 
Sentence2: pie charts are circle graphs.
answer:
circle


question:
Sentence1: Then the total current and Joule heating are solved. 
Sentence2: Electrical current running through a wire causes an increase in Joules.
answer:

Joule