Anchor: One approach to using prototyping as part of the system development process has been described as a spiral model of system development.
Entailed: One approach to using prototyping has been described as a spiral model of system development.
Contradiction: One approach to using prototyping has definitely not been described as a spiral model of system development.
Contradiction: The campanile of the Piazzetta is made of concrete.
Contradiction: The Saint-Louis Cathedral is over one hundred years old.
Contradiction: There are ten reforms that could reduce presidential election spending.
Contradiction: I also do not wish to view that, I believe I am not able.