[['date', 'course', 'distance', 'type', 'winner'], ['13 may', 'milan', '-', 'team time trial', 'renault - elf'], ['14 may', 'parma to viareggio', '-', 'stage with mountain (s)', 'giuseppe saronni ( ita )'], ['15 may', 'viareggio to cortona', '-', 'plain stage', 'michael wilson ( aus )'], ['16 may', 'perugia to assisi', '-', 'individual time trial', 'bernard hinault ( fra )'], ['17 may', 'assisi to rome', '-', 'plain stage', 'urs freuler ( sui )'], ['18 may', 'rome to caserta', '-', 'plain stage', 'urs freuler ( sui )'], ['19 may', 'caserta to castellammare di stabia', '-', 'stage with mountain (s)', 'silvano contini ( ita )'], ['20 may', 'castellammare di stabia to diamante', '-', 'plain stage', 'francesco moser ( ita )'], ['21 may', 'rest day', 'rest day', 'rest day', 'rest day'], ['22 may', 'taormina to agrigento', '-', 'stage with mountain (s)', 'moreno argentin ( ita )'], ['23 may', 'agrigento to palermo', '-', 'stage with mountain (s)', 'giuseppe saronni ( ita )'], ['24 may', 'cefalã to messina', '-', 'plain stage', 'urs freuler ( sui )'], ['25 may', 'palmi to camigliatello silano', '-', 'stage with mountain (s)', 'bernard becaas ( fra )'], ['26 may', 'rest day', 'rest day', 'rest day', 'rest day'], ['27 may', "cava de' tirreni to campitello matese", '-', 'stage with mountain (s)', 'bernard hinault ( fra )'], ['28 may', 'campitello matese to pescara', '-', 'stage with mountain (s)', 'silvano contini ( ita )'], ['29 may', 'pescara to urbino', '-', 'plain stage', 'guido bontempi ( ita )'], ['30 may', 'urbino to comacchio', '-', 'plain stage', 'silvestro milani ( ita )'], ['31 may', 'comacchio to san martino di castrozza', '-', 'stage with mountain (s)', 'vicente belda ( esp )'], ['1 june', 'fiera di primiero to boario terme', '-', 'stage with mountain (s)', 'silvano contini ( ita )'], ['2 june', 'piancogno to montecampione', '-', 'stage with mountain (s)', 'bernard hinault ( fra )'], ['3 june', 'boario terme to vigevano', '-', 'plain stage', 'robert dill - bundi ( sui )'], ['4 june', 'vigevano to cuneo', '-', 'plain stage', 'francesco moser ( ita )'], ['5 june', 'cuneo to pinerolo', '-', 'stage with mountain (s)', 'giuseppe saronni ( ita )'], ['6 june', 'pinerolo to turin', '-', 'individual time trial', 'bernard hinault ( fra )'], ['total', 'total', '-', 'km (mi)', 'km (mi)']]
half of all the Total Stage were of the Stage With Mountain (s) Type
half of all the [ENT] [ENT] were of the [ENT] [ENT]