The memorandum noted the United Nations estimated that 2.5 million to 3.5 million people died of AIDS last year.
The US government estimated 2.0 million people died of AIDS last year
The prompt says nothing about what the US government estimated, only the UN. Again, the system thinks the UN is the only one that can give an estimate.
( z1 estimate :ARG0 ( z2 government-organization :ARG0-of ( z3 govern :ARG1 ( z4 country :name ( z5 name :op "US" ) ) ) ) :ARG1 ( z6 die :ARG1 ( z7 person :quant 2500000 ) :ARG1-of ( z8 cause :ARG0 ( z9 disease :name ( z10 name :op "AIDS" ) ) ) :time ( z11 year :mod ( z12 last ) ) ) )