Techniques are provided for resolving ambiguity in natural language speech. The bubbler tank includes a fuel container, container cover, inlet supply line, and vapor outlet line. The pocket folder is fabricated from a one-piece blank of any suitable material such as paper, paperboard or plastic and has score lines on at least the back section to permit expansion when materials are inserted into the closed pocket. 0where LT denotes the distance on the optical axis between the object side of the first lens and the image side of the fourth lens; f denotes the total focal length of the photographing lens; and f3 denotes the focal length of the third lens. The additional keycode processing module replaces the keydata stream with a different keydata stream if the key has remained depressed.