IN: Write the next sentence in this paragraph:
How to clean keens
Use a stiff bristle brush to remove lose dirt.
Scrub the outside of your keens, including the tread, to remove lose dirt and debris. Scrub them until all of the dirt and debris are removed.
OPTIONS:
- Make sure your brush is consistently clean and not contaminated. Loosen any bond with the rummy leaves.
- Clean your keens at least once each week. If you clean them too often, or if you give them too much scrubbing, they will dry out and become smelly.
- Additionally, place them under cold, running water to further remove loose dirt and dust before you place them in the washing machine. Place a tablespoon (15 ml) of detergent into your washing machine.
- Use a nylon head brush to give them a good scrub. Be careful to only use these brushes on the brass keens, as the material may be damaged from the wax.

OUT: Additionally, place them under cold, running water to further remove loose dirt and dust before you place them in the washing machine. Place a tablespoon (15 ml) of detergent into your washing machine.

IN: Write the next sentence in this paragraph:
How to calculate the refractive index in physics
Measure the width of the transparent object.
For example, a pane of window glass has a thickness that may be stated by the manufacturer, but which should be measured to ensure accurate calculation of the refractive index.
Send light from a point light source through the object.
OPTIONS:
- Light from an invisible window is visible through a transparent window. Calculate refractive index by finding the refractive index number (pi).
- Monochromatic point light sources are available through laboratory supply outlets. Place the point light source a known distance from the surface of the object.
- Suppose a window pane has a thickness of 180 degrees. However, as a general rule of thumb, you must send light that's smaller than 180 degrees through the object.
- To generate a refractive index, plug light into a fraction of their length and have the light propagate from the fraction to the center point. A chart, for example, would use a point light source, to represent the diameter of a space.

OUT: Monochromatic point light sources are available through laboratory supply outlets. Place the point light source a known distance from the surface of the object.

IN: Write the next sentence in this paragraph:
How to care for a diabetic dog
Make a plan for your dog's health with your vet.
Diabetes requires swift treatment, but the treatment plan depends on your dog's current health. Insulin is usually required, and the vet will determine the amount.
OPTIONS:
- Diabetes can be caused by arthritis or inflammatory bowel disease (dap), as well as weight gain or joint problems. If your dog has any of these, your vet will assess your dog's needs for treatment.
- The vet may suggest adding insulin to your dog's diet to control blood sugar levels. Sometimes feeding your dog food along with the medications your vet prescribes can cause your dog to overeat, resulting in him eating less.
- The vet will most likely suggest treatment methods based on the severity of your dog's condition and the estimated amount of your dog's insulin consumption. Help your vet determine an appropriate treatment.
- You also may have to make certain lifestyle changes. A long talk with a veterinarian is the first step A simple test can diagnose diabetes in your dog.

OUT:
You also may have to make certain lifestyle changes. A long talk with a veterinarian is the first step A simple test can diagnose diabetes in your dog.