Я обновил regexp.json следующим образом.Хорошо работает.
{
"intents" : [
{
"name" : ["weather"],
"grammar" : [
"$ [What is|How is] the weather in {location}"
]
}
],
"entities" : {
"location":["tokyo","osaka","kyoto"]
},
"synonyms" : [
["What is","What's","What","what"],
["How is","How's","How","how"],
["tokyo","Tokyo"],
["osaka","Osaka"],
["kyoto","Kyoto"]
]
}