A manipulator comprising a foot part and a number of members connected to the foot part and to each other respectively, and at least a gripper part, such that the members and the gripper constitute, with the foot part, an arm, wherein drive means, in particular motors for moving at least a number of the members and the gripper are provided in the foot part. During a first communication session between a first user and at least a second user, at least a first communication exchanged between the first user and the second user can be detected and stored. The head support comprises a head support body and a pair of head support wings respectively extending forwards from a left side and a right side of the head support. A valve stem is disposed adjacent each of the passage outlets and is operable to selectively allow flow from the passage outlets to the gate outlet. 0 rpmmm, and a dropwise-addition rate of the mixture liquid A1 is preferably from 0. Then the character recognizing means 104 conducts character recognition using word knowledge such as the extracted store names, building names, and place names.