This question type allows the user to complete a sentance by answering in context
of other written material. Input fields are visualized directly in the paragraph
and they are be modified easily via a simple convention:
[answer] - single match only
[answer~or~other~optional~answer] - single written answer, but multiple possible
correct answers
[correct|incorrect|another] - Select field, first answer is correct but rest become
options; these are randomized to the user