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: Lions live in social groups called prides. 
Sentence2: Chimpanzees live in social groups called communities.
answer:
groups


question:
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.
answer:
object


question:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system. 
Sentence2: Along with water, minerals are lost in the urine.
answer:

Urine