As its time grows shorter, Congress' agenda seems to grow longer. Yet members appear ready to head off to their August recess soon, and the long-term absence of Sen. John McCain (R-Ariz.) because of his cancer diagnosis changes the calculus. Roll Call Senior Editor David Hawkings offers his take on Federal Drive with Tom Temin.
John McCain had cancer when he was a member of Congress
The prompt says that John McCain is in a long-term absence from Congress because of his cancer diagnosis. This indicates he is still in Congress and still has  cancer. I think the system thinks that a long-term absence means he is not a member
( z1 disease :name ( z2 name :op "cancer" ) :domain ( z3 person :name ( z4 name :op "John" :op "McCain" ) ) :time ( z5 have-org-role :ARG0 z3 :ARG1 ( z6 government-organization :name ( z7 name :op "Congress" ) ) :ARG2 ( z8 member ) ) )