a device configured to provide contents including an image to a first user by making {TAIL ~ a signal} of {HEAD ~ said contents} into a state capable of being sensed by said first user, 
a device configured to provide contents including an image to a first user by making { TAIL ~ a signal } of { HEAD ~ said contents } into a state capable of being sensed by said first user ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH