Mangueira
It is most famous for its samba school , the Grêmio Recreativo Escola de Samba Estação Primeira de Mangueira , called for short Estação Primeira de Mangueira ( First Mangueira [ train ] Station ) or simply Mangueira , which is one of strongest competitors in the annual Rio Carnival samba competition . 
<triplet> Grêmio Recreativo Escola de Samba Estação Primeira de Mangueira <subj> samba school <obj> instance of