Click on the orange point and write the correct answer.
Define a grammar for the parenthesis language, where all sentences in the parenthesis language consist of balanced pairs of left and right parentheses. Example of valid pairs: (), (()), ()(), (((()())()())). Example of invalid pairs: ())(, (, )(, )(((((((((.
{"50.3906_48.2955":[{"id":56941635,"answer":"\u003cparen\u003e -\u003e (\u003cparen\u003e) \u003cparen\u003e | \u003cempty\u003e","x":50.3906,"y":48.2955}]}
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