Table 1: An example of interest.

IDRequest = //The only ID for each request
IDSinknode = //ID for each sink node
Type = //class of request
Description of type = //detail of request
Interval = 20 ms //send back events every 20 ms
Rect //from sensors within rectangle
Timestamp = 01 : 20 : 20
Expireat = 01 : 30 : 20