service := statements [connect_statement statements] [time_condition] statements := operate object
object := [number_ad] [dealer_conditon] [component_condition] [extra_conditon] object_vocabulary number_ad := <数量副词> dealer_condition := <商家限制> component_condition := <材料限制> extra_condition := <其他附赠限制> object_vocabulary := <描述的商品词汇> connect_statement := <链接语句> time_condition := <时间限制>
// service 是一个完整的服务。如给我来一份比较简单的套餐，最好十分钟送到;来一包烟和一瓶王老吉 // statements 为最基本的完整操作行为，如买包烟，来一份大肉水饺等;
底层在处理语句中operate时抽取的基本接口有: 查询(select)，再筛选，最优组合配对(resort)
select WITH [number_ad,][component_condition,][extra_condition,]object_statement
filter WITH [dealer_condition,][time_condition]
resort WITH [seam_dealer]
select(object, number=1, com_cond=None, extra_cond=None) filter(dealer=None, time_cond=60) resort(strategy='seam_dealer')