4074
Leg and back pain after spinal anaesthesia involving hyperbaric 5 % lignocaine .
 Disease: Leg and back pain; Chemical: lignocaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: Leg and back pain; Chemical: lignocaine