<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?utofauti huu wa lugha na utamaduni ulishinikiza kongamano kuu la unesco kutangaza siku ya kimataifa ya lugha ya mama imld mnamo novemba 1999, siku inayokumbukuwa mnamo februari 21 kila mwaka.  <response>: the entry into force on 18 march 2007 of the convention on the protection and promotion of the diversity of cultural expressions throws a particular light on this years celebration of the world day for cultural diversity on 21 may next. 