14945
Because psoralens sensitize skin to ultraviolet A light , phototoxic reactions are the most frequent adverse effect of this treatment .
 adverse effect: phototoxic reactions, psoralens
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  phototoxic reactions, psoralens 
Answer:
 adverse effect: phototoxic reactions, psoralens