As parties adapt to these new conditions, new definitions - replete with new assumptions about their functions - are likely to shape the ongoing debate about their roles and functions in the 21st century.
They had roles and functions in the 19th century.
( z1 have :ARG0 ( z2 they ) :ARG1 ( z3 and :op ( z4 role ) :op ( z5 function ) ) :time ( z6 date-entity :century 19 ) )