On average, city bus drivers who are using the new computerized fare-collection system have a much better on-time record than do drivers using the old fare-collection system  Millicent Smith has the best on-time record of any bus driver in the city
Ttherefore, she must be using the computerized fare-collection system
All the city's solid-waste collection vehicles acquired after 1988 have a larger capacity than any of those acquired before 1988. This vehicle has the largest capacity of any the city owns, so it must have been acquired after 1988.