1623
However , a recent post - marketing survey in Japan revealed that interstitial pneumonia occurred in 4 among approximately 2 000 Japanese patients treated with sorafenib .
 adverse effect: interstitial pneumonia, sorafenib
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:  interstitial pneumonia, sorafenib 
Answer:
 adverse effect: interstitial pneumonia, sorafenib