Sheehan, whose 24-year-old son, Casey, died last year in Iraq, started her antiwar demonstration along the roadside in Crawford, Texas, on Aug. 6, demanding to meet with the president.
Casey did not die in Texas.
The statement is in the correct category because the excerpt says that Casey died in Iraq, which means he did not die in Texas. The system may have had difficulty due to the fact that the demonstration happened in Texas.
( z1 die :polarity - :ARG1 ( z2 person :name ( z3 name :op "Casey" ) ) :location ( z4 state :name ( z5 name :op "Texas" ) ) )