<human>:  Antonio is a boy who eats a lot and his weight is 50 kilograms. Antonio's sister, who is an athlete, weighs 12 kilograms less than him. How much do the two siblings weigh together?
<bot>: How much does Antonio's sister weigh? ** Antonio's weight is 50 kilograms. His sister weighs 12 kilograms less than him so she weighs 50 kilograms - 12 kilograms = <<50-12=38>>38 kilograms
How much do the two siblings weigh together? ** The weight of the two siblings combined is 50 kilograms + 38 kilograms = <<50+38=88>>88 kilograms.
#### 88