A chewing gum contains a water-insoluble gum base portion containing a polyolefin thermoplastic elastomer; a water-soluble bulk portion; and at least one flavor component, which is cud-forming and chewable at mouth temperature. The ESD protection circuit includes n transistors with n gates and less than n drains where n is an integer greater than 1. This location corresponds to a location corresponding to the first focal value. The initial group of open application icons corresponds to at least some of the concurrently open applications. Therefore, there can be provided the working gas circulation type engine capable of obtaining a stable output. Thus, the two-dimensional NPC approaches the player character and is moved toward a visual boundary surface, and finally leaves the field of view of the virtual camera without moving within the 2D inhibit space.