How to identify poison oak<br>Learn about poison oak. Poison oak is similar to its close relatives poison ivy and poison sumac because they are all members of the same botanical family. The most common type of poison oak, known as western poison oak, grows most commonly along the pacific coast in oregon, washington, and california.
Western poison oak grows in places other than along the pacific coast in oregon, washington, and california.
The text says western poison oak, grows MOST COMMONLY along the pacific coast in oregon, washington, and california -the implication is that it does not grow exclusively there. The absolute statement fooled the model.
( z1 grow :ARG1 ( z2 poison-oak :mod ( z3 world-region :name ( z4 name :op "West" ) ) ) :location ( z5 place :ARG2-of ( z6 except :ARG1 ( z7 along :op ( z8 coast :mod ( z9 pacific ) :location ( z10 and :op ( z11 state :name ( z12 name :op "Oregon" ) ) :op ( z13 city :name ( z14 name :op "Washington" ) ) :op ( z15 state :name ( z16 name :op "California" ) ) ) ) ) ) ) )