Lubbock High School is a 5A high school serving grades nine to twelve in Lubbock, Texas (USA). Part of the Lubbock Independent School District, the school is known for its academic program and for the fact that it has produced a number of talented musicians, vocalists, businessmen, and scientists over the years (including Buddy Holly and The Crickets, Natalie Maines, Ralna English, and Mac Davis).
Natalie Maines and Ralna English know each other
The context says Natalie Maines are Ralna English both went to the school, but did not indicate when, so it is neither correct or incorrect to say they knew each other. The system probably could not differentiate this
( z1 know :ARG0 ( z2 person :name ( z3 name :op "Natalie" :op "Maines" ) ) :ARG1 ( z4 person :name ( z5 name :op "Ralna" :op "English" ) ) )