2378
On the fifth day of tocolysis with magnesium sulfate, nifedipine, terbutaline and betamethasone, edema developed in both labia.
 adverse event: developed 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: developed 