Provided is an adhesive bone filling agent which adheres to bone tissue and hardens, and the adhesive bone filling agent is prepared by mixing a liquid component composed of a buffer solution comprising a water-soluble biocompatible polymer with a powder component comprising calcium phosphate and an organic acid-based crosslinking agent. When one switch opens, one plunger is shifted into its opening position and the other plunger is shifted into its locking position. The low frequency limit of the data is estimated by matching the statistics of the histogram to the statistics of a modeling function. The deflecting fin is configured by an upstream portion and a downstream portion, which are connected together at a predetermined angle. Further disclosed are techniques and systems for generating an audible output in which different portions of a text are narrated using voice models associated with different characters. A widget is dynamically constructed to provide the prompt to a user.