 Soki opesi fraze, yanolá motuna oyo elandi na mwa bafraze: Nini ekozala ndakisa ya kosilisa mokakatano oyo elimbolami na fraze yango oyo ekoki kosalelama te.
Ndakisa ya solution oyo ekoki kosalelama te mpo na mokakatano ya banzela oyo etondi na bato na ngonga ya mobulu na engumba ekozala kotonga banzela ya mbangu to ba tunnels moko moko mpo na motuka moko na moko, oyo ekosenga motango monene ya botongi mpe ekosala ete bomoi ya mokolo na mokolo ebeba mingi . Ekozala mpe ntalo mingi mpe solution possible te mpo gouvernement to bafuti mpako ba financer.