Complex sentence: At some point during 1954 in a flash-cut, 615 was split off from 901, to include the area to the east of the Tennessee River, but in September 1995, area code 423 was created to cover Chattanooga, the Tri-Cities and Knoxville.
Split into simpler sentences: At some point during 1954 in a flash-cut, 615 was split off from 901, to include the area to the east of the Tennessee River. In September 1995, area code 423 was created to cover Chattanooga, the Tri-Cities and Knoxville.