$ph = $pr.find ".placeholder:visible"
@draggable_move $(qp), $ph.eq(0), @multiple
+ get_answer: (question) ->
+ answer = {}
+ $(".predicate [data-predicate]", question).each (i, subjects) =>
+ predicate = $(subjects).attr('data-predicate')
+ answer[predicate] = []
+ $('.question-piece', subjects).each (i, qpiece) =>
+ $qpiece = $(qpiece)
+ answer[predicate].push($qpiece.attr('data-id'))
+ return answer
class PrawdaFalsz extends Exercise