If you have rheumatic heart disease, high blood pressure, or diabetes, or take digitalis drugs, vitamin E can be harmful.
diabetes is better than high blood pressure. 
the statement does not argue for or against this therefore it should be neither. The system has made a common sense error. 
( z1 have-degree :ARG1 ( z2 diabetes ) :ARG2 ( z3 good :ARG1 z2 ) :ARG3 ( z4 more ) :ARG4 ( z5 pressure :ARG1-of ( z6 high ) :mod ( z7 blood ) ) )