Which continents are in 3 hemispheres?

First of all, there are two hemispheres, longitudinally; the northern and the southern hemispheres.

Secondly, there are two hemispheres, latitudinally; the eastern and western hemispheres.

Given the above, one could say that South America occupies parts of the northern, southern and western hemispheres, and that Africa and Asia occupy parts of the northern, southern and eastern hemispheres.