:import std/List .
:import std/Char .
determine [∅?0 '?' ([(0 =? '?' 'Q' (0 =? '.' 'S' (0 =? '!' 'E' 'N')))] _0)]
:test (determine empty) ('?')
:test (determine "hi there, how are you today?") ('Q')
:test (determine "I'd like to present to you the washing machine 9001.") ('S')
:test (determine "You have been nominated to win one of these!") ('E')
:test (determine "Just make sure you don't break it") ('N')
main [[0]]