story_35 (?) clo activity included same distractor 2xBug report

[JackMostow]

Describe the bug
The same distractor (kazi?) showed up as choices 2 and 4 in the same cloze question on page 2 of story 35.

To Reproduce
Steps to reproduce the behavior:

1. Pick story.clo::hear.clo_story 35
2. On page 2 you'll get a cloze question

Expected behavior
A cloze question with 4 distinct choices.

Actual behavior
A cloze question with once of the choices listed 2x.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional details

[JackMostow]

This might be a bug in mcq.json, but a repeated choice should disqualify a cloze question.

[JackMostow]

Options:
a. "Eliminate all spindles in the kingdom": Off-line eliminate all overlapping choices in mcq.json.
+: fairly straightforward
-: requires parsing mcq.json
-: requires specifying which category of choice to eliminate when the same choice appears in >1 category
-: specific to mcq.json

b. "Inoculate the princess": Runtime constrain selection of distractors to exclude choices so far
+: complicates the code

c. "vaccine to cover variants": Check all multiple choice questions and skip them if any choice (including target) is repeated. --> DO THIS IF FEASIBLE
+: simpler code, e.g. try-catch-throw
-: may skip questions that a more sophisticated solution could salvage
-: must fire at right point in code, e.g. can't skip page of story

[sushant-varanasi]

https://github.com/RoboTutorLLC/RoboTutor_2020/tree/cloze_issue

I have worked a little in this branch, but it has the infinite loop possibility

[JackMostow]

@mmh - Use this issue to see how the animator graph interacts with the Java component for mcq; sentence prediction is similar. Make sure the distractor differs from the correct sentence.

[JackMostow]

Sushant in meeting notes:
Thought a little upon the cloze question, found "CLOZEPAGEFLIP" (has been commented though) in story_questions/animator_graph.json, which might be helping us to skip a cloze question if multiple options match each other.
What it would take:
Animator graph first call method to retrieve question from mcq.json and store it
Check for repeated choices in src/main/java/cmu/xprize/comp_questions/CQn_ViewManagerASB.java and set FTR to skip cloze question (--> CLOZEPAGEFLIP?)
If survive check, retrieve stored question and present it as at present