Disclosed are a method, system, and computer program product for determining a common factor contributing to network activity with reduced computational resource utilization. The rotation axle of the outer lock part is provided thereon with the cam-styled axle sleeve; the rotation axle of the inner lock part is further connected with a second rotation axle. The guarantee foil, by pivoting-up the pour-out spout into the pour-out position, is cut open and thus frees the passage to the pour-out spout. A source region, a drain region, a channel region, and a lightly doped region are formed in the semiconductor pattern.