How to ride longboards<br>Rent or borrow a surfboard 8 foot (2.4 m) or taller. This height is classified as a longboard. These tall boards are great for beginners, since they're typically more stable and better for catching small waves.
Without surfboards, longboards would not exist.
Since a longboard is a type of surfboard, longboards would not exist if all surfboards did not exist. AI does not recognize longboard as a type of class surfboard.
( z1 exist :polarity - :ARG1 ( z2 board :ARG1-of ( z3 long ) ) :condition ( z4 surfboard :polarity - ) )