Graph Expression : count

[youss123]

hello All,

I want to count the number of patients who responded to all the 3 questions : question 1 , 2 , 3.

But this expression is not working. 

It does not give the number of patients how reponded the 3 questions  , but rather the number of patients who answered one of the 3 questions.

=count({ <[question]={'question1'}, [question]={'question2'}, [question]={'question3}, [responded]= {'Yes'} >}distinct [KEY - Patient])

Many thanks in advance

[youss123]

Thank you vm

[youss123]

I have another question please, how can I set up this solution in the script part, to make a filter which where I can have all the possible combinations:

The respondents just to question 1 and 2 , or 2 and 3 , or 1 and 3 ....

Thank you in advence