In 1869 Sumner resigned his see, but continued to live at the official residence at Farnham until his death on the 15th of August 1874.
Sumner resigned his see 5 years before he died
Sumner resigned his see in 1869, which is 5 years before 1874 when he died. The system could not understand the difference in years. 
( z1 resign :ARG0 ( z2 person :name ( z3 name :op "Sumner" ) ) :ARG1 ( z4 see :poss z2 ) :time ( z5 before :op ( z6 die :ARG1 z2 ) :quant ( z7 temporal-quantity :quant 5 :unit ( z8 year ) ) ) )