Problem: Article: The painting on the left is titled "The light to the future"; the one on the right is titled "The light illuminating darkness." The painting to the left has the clue to opening the door on the left side, whereas the right painting contains the clue for the right door. Since the titles are referring to light, it needs light to reveal the clues. The flash of your camera will reveal three figures on each painting.
Summary: Examine the paintings. Snap a shot of both paintings.

INPUT ARTICLE: Article: Ich is a highly contagious parasite that takes the form of small white cilia-covered spots on the fish's body. To fight it, raise the tank temperature to 86F (30C) for three days. This should kill the parasite. If the spots don't disappear after three days, put your fish in a quarantine tank and add cupramine (copper solution) to the water. Follow the instructions on the label. Keep the copper levels at 0.2 ppm. You can measure copper levels with a salifert test kit that you can find in hobby stores. Kill off the Ich in the original tank with aquarium salts, which you can buy in pet supply stores. Add one teaspoon (5 g) per gallon (4 L) of water every 12 hours for 36 hours. Let the salt remain in the tank for 7 to 10 days. Blood parrot cichlids have parrot-like mouths and back humps. This unique anatomy puts them at risk for swim bladder disease. In this condition, the fish gets constipated and swims at an awkward angle. To correct this problem, feed the fish two to three shelled peas once a week to regulate the bowels. Parrot cichlids, especially blood parrot cichlids, are also prone to bacterial infections, fungal infections, and parasites like skin flues and worms. Talk to your vet or read books that detail common diseases among parrot cichlids. Recognize the early symptoms and how to treat them. As with many diseases, early detection can make a world of difference.

SUMMARY: Treat Ich through environment and medicine. Change their diet for swim bladder disease. Study other common diseases.

In one sentence, describe what the following article is about: Statistically, you are more likely to hit a ship if you aim for the center of the board, so start there. The four by four squares in the middle of the board are likely to contain a carrier ship or battleship. Imagine the board as a checkerboard, where half the squares are dark and half are light. Each ship covers at least two squares, meaning every ship must touch a dark square. Therefore, if you fire randomly at only even squares or only odd squares, you will minimize the number of turns you need to hit every ship. Once you have a hit, you will cease firing randomly and commence targeting the ship in question. To keep track of the light and dark squares, look at your own board and imagine that the diagonal line of squares from the top left corner to the bottom right corner is dark. Imagine the squares from the to right corner to the bottom left corner are light. You can count out from there to ensure each square you're targeting is the right color. If you strike out twice when firing, try firing into a different segment of the board. The chances that you just missed a ship are lower than the chances that you missed by a wide margin.
Summary:
Fire at the center of the board. Use parity to up your chances. Move away when you have two misses in the same segment.