<prompt> Translate the following text to English4 a Barua ya darasa la kwanza ya nyumba, au barua ya darasa la kwanza, au barua ya darasa la kwanza ya nyumba, au barua ya darasa la kwanza ya nyumba, au barua ya darasa la kwanza ya nyumba.  <response>: 4 Household First-Class Mail either sent or received by households. 