The memorandum noted the United Nations estimated that 2.5 million to 3.5 million people died of AIDS last year.
Nobody dies from AIDS the year before last year.
The statement is in the correct category because people have been dying from AIDS for decades. The system may have had difficulty because the specific estimate in the excerpt was only for last year.
( z1 die :ARG1 ( z2 nobody ) :ARG1-of ( z3 cause :ARG0 ( z4 disease :name ( z5 name :op "AIDS" ) ) ) :time ( z6 before :op ( z7 year :mod ( z8 last ) ) ) )