Questionnaire-2024/natural_deduction_propositional_logic/0015.tex

\item \lect Translate the following reasoning into a sequent. If the sequent is valid, proof it using the rules of natural deduction.
If the sequent is not valid, provide a counter example.
  \begin{quote}
    If I press the button, the window opens. \\
    The window is open.\\
    Therefore, I pressed the button.\\
  \end{quote}