Anchor: Following establishment of this initial mail classification schedule, a 3623(b) provides that the Postal Service may from time to time request that the Commission submit, or the Commission may submit to the Governors on its own initiative, a recommended decision on changes in the mail classification schedule.
Entailed: The initial mail classification schedule may be changed with a 3623(b). 
Contradiction: The mail classification schedule, under no circumstances, can be changed. 
Contradiction: A black dog is in the water
Contradiction: The students are reading together.
Contradiction: You get smells down there like the smell of fresh sewage. 
Contradiction: It's very crazy.