Task: Text Categorization
Input (English): Question: Pulmonary hypertension occurs as a consequence of: 
 Options:  <0> Bronchoconstriction and inflammation of the upper respiratory tract. <1> Bronchoconstriction and inflammation of the lower respiratory tract. <2> Bronchiectasis and pulmonary collapse. <3> Vasoconstriction of the arterioles of the systemic circulation. <4> Vasoconstriction of the arterioles of the pulmonary circulation.
Output (English): pharmacology