6561
Four patients in whom pulmonary oedema developed during tocolysis with hexoprenaline are described and the aetiological factors and pathogenesis of this potentially lethal complication discussed .
 adverse effect: pulmonary oedema, hexoprenaline
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:  pulmonary oedema, hexoprenaline 
Answer:
 adverse effect: pulmonary oedema, hexoprenaline