The Townsend Thoresen cross-Channel ferry Herald of Free Enterprise capsized outside the Belgian port of Zeebrugge on the 6th of March with the loss of 135 lives.
Z is the last letter of the alphabet and is the first letter of Zeebrugge.
Z is the last letter of the alphabet and Zebrugge most certainly starts with a Z. I think the wording must have confused the system.
( z1 and :op ( z2 letter :ord ( z3 ordinal-entity :value "-1" ) :part-of ( z4 alphabet ) :domain ( z5 string-entity :value "Z" ) ) :op ( z6 letter :ord ( z7 ordinal-entity :value 1 ) :part-of ( z8 string-entity :value "Zeebrugge" ) :domain z5 ) )