El Nino is so named because the effects of the warmer water off Peru are usually noticed near Christmas time.
The effects of warmer water off Peru are usually noticed near the Christmas tree.
it is incorrect because time was replaced with tree but the AI took is as unknown information added and marked it neither.
( z1 notice :ARG1 ( z2 affect :ARG0 ( z3 water :ARG1-of ( z4 have-degree :ARG2 ( z5 warm :ARG1 z3 ) :ARG3 ( z6 more ) ) ) :location ( z7 off :op ( z8 country :name ( z9 name :op "Peru" ) ) ) ) :mod ( z10 usual ) :location ( z11 near :ARG2 ( z12 tree :mod ( z13 festival :name ( z14 name :op "Christmas" ) ) ) ) )