The AIDS epidemic has taught us a great deal about what it means for an individual to have been abandoned by his family, then become a prominent artist, then be nursed to his death by his partner, or as the language has changed, his significant other, his long time companion, his partner, his spouse.
The AIDS epidemic has also taught us about the Jurassic extinction even 65 million years ago.
( z1 teach :ARG0 ( z2 epidemic :mod ( z3 disease :name ( z4 name :op "AIDS" ) ) ) :ARG1 ( z5 extinct :mod ( z6 period :name ( z7 name :op "Jurassic" ) ) :time ( z8 before :op ( z9 now ) :quant ( z10 temporal-quantity :quant 65000000 :unit ( z11 year ) ) :mod ( z12 even ) ) ) :ARG2 ( z13 we ) :mod ( z14 also ) )