Task: Question Answering
Input (English): Question: The deficit of which of the following enzymes is NOT a cause of porphyria ?: 
 Options:  <1> Protoporphyrinogen oxidase. <2> Delta-amino levulinic synthetase. <3> Coproporphyrinogen III oxidase <4> Uroporphyrinogen decarboxylase. <5> Uroporphyrinogen III cosintetase.
Output (English): 2