IN: Write the next sentence in this paragraph:
How to treat morgellon's disease
Identify your symptoms.
Morgellon's disease is a skin disorder in which people have itchy sensations on their skin. This may cause them to scratch until they have open sores.

OUT: Symptoms include : Severe itching caused by sores or a rash the feeling that insects are crawling under your skin the feeling that you are being bitten or stung by insects fibers or strings in or on your skin. The fibers may be in the sores.

IN: Write the next sentence in this paragraph:
How to keep a dog off the couch
Buy a comfortable pet bed for your dog.
Pay attention to how your dog likes to sleep and then buy a bed that supports its sleeping style. For example, if your dog usually curls up into a ball on the couch, buy a donut or bolster bed.

OUT: If your dog likes to spread out on the couch, purchase a soft, cushion bed. Make sure that the bed is the right size for your dog.

IN: Write the next sentence in this paragraph:
How to calculate arbitrage in forex
Understand the foreign exchange market.
The foreign exchange market, commonly referred to as forex, is an international exchange for the trading of currencies. It allows investors (from large banks to individuals and everyone in between) to trade one national currency for another.

OUT:
Each trade is both a purchase and a sale, as one currency is sold in order to buy another one. This duality means that each currency is priced only in relation to another currency.