1. In 1969, in Portland, Oregon, a man went to rob a bank.
2. He didn't want people in a bank to know what was happening, so he walked up to one of a cashiers, wrote on a piece of a paper, 'This is a robbery and I've got a gun,' and shoved a paper to a cashier.
3. Then he wrote, 'Take all your money out of your drawer and put it in a paper bag.'
4. The cashier read a message, wrote on a bottom of a paper, 'I haven't got a paper bag,' and gave a paper back to a robber.
5. A robber ran out of a bank.