INPUT ARTICLE: Article: Cut a piece of lemon into individual slices that are small enough to fit into each section of an icecube tray. Fill the ice cube tray with vinegar. The vinegar will help deodorize and sanitize your garbage disposal drain. It will also clean out crevices in your garbage disposal sink. Leave the tray in the freezer overnight and allow all of the ice cubes to harden. Break the ice cubes out of the tray and dump them into your garbage disposal drain. Run cold water over the ice cubes and turn on your garbage disposal. The blades should break up the ice, and the citrus and vinegar should freshen up the smell and clean your drain. Once you're done, run cold water to rinse out the drain. Cold water hardens oils and grease so that the garbage disposal blade can break them up.

SUMMARY: Cut a lemon into slices. Put the slices into an icecube tray and top them with vinegar. Allow the ice cubes to harden. Place the ice cubes in your garbage disposal. Turn on your garbage disposal until you break up all the ice.

In one sentence, describe what the following article is about: Research sports that you know of. See how they are played, what the rules are, how you win, and what penalties there are. By learning about lots of sports, you are able to see what you like and dislike. Start a list of features from various sports that you want your sport to include. You might take the layout of a baseball field, the play features of bocce ball, and the penalties of football. Don't take more than one or two features from each sport unless you want to create something that's a variation of a sport that already exists. Write out how the game is played and how a winner is determined. Be as specific as possible about what each player or team must do and what they are not allowed to do. Decide if there is a time limit or if play goes on until a certain score or goal is reached. Decide if teams rotate turns or if play shifts back and forth between them at random. For example, in volleyball, each team serves at specific times, but play passes back and forth until one team misses the ball. In baseball, teams take turns being at bat and in the field. Many sports, like soccer, have a time limit and the winner is whoever has the most points. Others, like tennis, are played until a specific point value is reached. If you want the sport to require teams, decide if there must be a set number or if it can vary. On the other side, plan the sport differently if you want it to be a one-on-one game. Keep in mind that some of the most popular sports are adaptable for a range of players. Sports like soccer, basketball, ultimate frisbee, and football are designed to accommodate a range of player numbers. They typically require at least two people per team and up to ten or eleven, but the game can be played with any number in between. Games like ping pong, tennis, and racquetball require at least two and no more than four, in most cases. Set out what you think is the ideal number of players, but make note of how the game could be adapted for different numbers of players. Start broad, and expand outward into specifics. Make sure there are enough rules to make the sport work but not so many that it becomes confusing for players to learn it. For starters, set out five to ten basic rules. You might brainstorm lots of rules and then rank them in terms of importance. Go through a process of elimination to get rid of ones that are not necessary. Rules include what players must do, what they are allowed to do, and what they are not allowed to do. For example, players must walk, are allowed to jump, but can't run. Incorporate various rules from sports that already exist, which you researched in the first stage of the sport's development.
Summary: Browse the rules and objectives of existing sports. Outline the basic objective of the sport. Determine the ideal number of players. Write out all of the rules that are necessary to make the game work.

INPUT ARTICLE: Article: On many watches, you will find two different serial numbers: one on the case of the watch, and one on the interior mechanism of the watch. This is because the two are often manufactured separately. If you check both the case and the mechanism and discover that they were made in different years, this can be due to several reasons. If the difference is only one year, it may simply be that one component was manufactured first and then warehoused until it was needed to assemble the watch. If the difference is more than a year, it is likely that one of the elements has been replaced. To find the serial number on the case of your Bulova watch, simply flip it over and look at the flat back of the case. If there is a serial number, it should be engraved here. Serial numbers do not all contain the same number of digits. Not all Bulova watches will have serial numbers on the case. If yours does not, you may want to consider looking for a serial number on the mechanism. You may want to use a magnifying glass to help you read the serial number. If you already looked for a date code on your watch, you may have already found the serial number. If there are no identifying marks on the outside of your watch, or if you want to know the model number of the movement that was used in your watch, you will have to take the back case off. The serial number may be located anywhere on the mechanism. Be very careful doing this, as you can damage the watch if you are careless. Be sure to place the watch on a soft cloth as you are working in order to prevent it from getting damaged. If the watch has a snap back case, you should be able to see a raised lip around the back and bezel of the case. There won't be any hinges or notches. Snap back cases simply snap into place, so you should be able to remove one by prying it up with a dull tool. Don't use anything sharp (like a knife blade) that you might cut yourself with. Some older watches have swing-back cases, which can be identified by a hinge on the back of the case. These are opened the same way as snap back cases, but the back hinges open instead of coming all the way off. You may even be able to open this type of back with your fingernail. If the watch has a screw back case, you should see six grooves or notches located somewhere along the perimeter of the metal back. You will need to open the back case using these notches. Screw back cases must be unscrewed before you can lift them away. You will need a special tool known as an adjustable case wrench to open one. There may also be a second protective cover inside of your watch. This can usually be pried off with a fingernail, but be careful not to damage the mechanism as you are doing this. If you have any trouble getting the case open, bring the watch to a professional jeweler. If you opened the back of your watch to locate a serial number, be sure to put it back together right away. For snap back watches, locate the small pin on the inner lip of the case and the small hole around the perimeter of the watch. Line up the pin and the hole, then press and click the case back on using your hands. For screw back cases, place the case over the back of the watch and grab onto the grooves using the case wrench. Rotate the case clockwise until it screws back into place. Once you have identified a serial number on your watch, you can try searching for the number online or using an online chart to help you identify when the watch was made. There is no official Bulova chart to reference, but many people have compiled charts based on their own observations of patterns. Some serial numbers are easier to identify than others. For example, watches that were produced before 1926 tend to have serial numbers that start with the numbers 1 or 2, but the exact number does not give any further clues as to its production date. Between 1926 and 1949, the first digit of the serial number was typically used to indicate in which year within a decade the watch was produced. For example, a serial number that starts with 1 could indicate that that watch was produced in 1931 or 1941.

SUMMARY:
Be aware of the two types of serial numbers. Find the serial number on the case. Find the serial number on the interior mechanism. Replace the back case. Compare the serial number to online lists.