Anchor: It could easily be seen by ships in the Firth of Forth and was a useful safeguard if prevailing winds carried the sound of the gunfire the wrong way.
Entailed: It is possible for winds to carry the sound of gunfire in the wrong direction.
Contradiction: Ships could never see it in the Firth of Forth.
Contradiction: It cannot be seen from the Firth of Forth.
Contradiction: The schedules don't need to be realistic.
Contradiction: People are drinking and having fun.
Contradiction: Children eating food on the floor.