Explanation:
The plot line is about a couple. On the eve of Christmas, the wife discovers she had little money to get her husband a gift. She visited a hair dressers shop where she sold her long hair for 20 dollars. With this money, she gets her husband a watch chain. Later in the evening she tells her husband she sold her hair to afford the chain. Her gift from her husband is a set of ornamental comb. He sold the watch to get her the comb. Bother their actions showed how much they loved each other.
A topic is like a title of a book and a Unit is like the chapters in the book.
pneumonoultramicroscopicsilicovolcanoconiosis
