<prompt> Translate the following text to SwahiliDuring renovations and cleaning undertaken in 1999, a low-wave electronic system was installed to keep pigeons away.  <response>: Wakati wa ukarabati na kusafisha uliofanywa mwaka 1999, mfumo wa elektroniki wa mawimbi ya chini uliwekwa ili kuwazuia njiwa wasivuke. 