Back in the spring of 1955 a teenage girl named Claudette Colvin and an elderly woman refused to give up their seats in the middle section of a bus to white people. When the driver went to get the police, the elderly woman got off the bus, but Claudette refused to leave, saying she had already paid her dime and had no reason to move. When the police came, they dragged her from the bus and arrested her. Now, her name was familiar to me. What text structure is being used?