Original sentence: ) Cambridge has a rule called "keeping Term": all undergraduates must reside a certain number of nights each term within four miles (6 km) of the University Church in the city centre unless they are granted special permission to do otherwise (this is given to students on exchange programmes or studying overseas as part of their degree).First contested in 1829, the race pits Cambridge University Boat Club against their Oxford counterparts over a four-mile (6 km) stretch of the River Thames.Oxford's version of this requirement has no set traditional name, but is occasionally referred to as the "Six Mile Rule", under which undergraduates must reside within six miles (10 km) of the Carfax Tower unless they have received special dispensation
Edited sentence: ) Cambridge has a rule called "keeping Term": all undergraduates must reside a certain number of nights each term within four miles (6 km) of the University Church in the city centre unless they are granted special permission to do otherwise (this is given to students on exchange programmes or studying overseas as part of their degree).First contested in 1829, the race pits Cambridge University Boat Club against their Oxford counterparts over a four-mile (6 km) stretch of the River Thames.Oxford's version of this requirement has no set traditional name, but is occasionally referred to as the "Six Mile Rule", under which undergraduates must reside within six miles (10 km) of the Carfax Tower unless they have received special dispensation