4744
A study following large patient groups on theophylline and a combination of theophylline and steroids might clarify the risk of ulcer formation in patients being treated with these medications for asthma .
 adverse effect: ulcer, theophylline; adverse effect: ulcer, theophylline
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: ulcer, theophylline; adverse effect: ulcer, theophylline