Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Beckett is 12 and is three years younger than Olaf, while Shannen is two years younger than Olaf.  If Jack is five more than twice as old as Shannen, what is the sum of the ages of all 4 people?

### Response:
 Olaf ana umri wa miaka 12 + miaka 3 = <<12+3=15>>15.
Shannen ana umri wa miaka 15 - miaka 2 = <<15-2=13>>13.
Jack ana umri wa miaka 5 + (2 * miaka 13) = <<5+2*13=31>>31.
Jumla ya umri wao wote ni miaka 12 + 15 + 13 + 31 = <<12+15+13+31=71>>71.