179
Six of 13 outpatients with schizophrenia who participated in a ten-week open trial of risperidone had an initial good response to the medication followed by development of intolerable affect, including feelings of agitation and depression and periods of crying and insomnia.
 adverse event: development 
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: development 