Ellen came into the house, and put her keys on the table. Then she put the groceries down on the counter. She usually put her keys in a small tray in her bedroom. Today was different because she was holding lots of groceries and she did not want to drop them. The problem was that this was different from her habit of putting keys in the tray. One hour later she could not find the keys. When she finally found them she decided to move the tray. She put the tray near the entrance so it was easy to put the keys there everytime she came in.