1117
A 47 year - old woman who had a 4-year history of intramuscular pentazocine injections in the lower extremities , developed gradual stiffness and weakness of the lower extremities .
 adverse effect: gradual stiffness, pentazocine; adverse effect: weakness of the lower extremities, pentazocine
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:  gradual stiffness, pentazocine; weakness of the lower extremities, pentazocine 
Answer:
 adverse effect: gradual stiffness, pentazocine; adverse effect: weakness of the lower extremities, pentazocine