<human>:  Sara is 6 inches taller than her brother Joe. Joe is 3 inches taller than his friend Roy. If Roy is 36 inches tall, how tall is Sara?
<bot>: How tall is Roy? ** Roy is <<36=36>>36 inches tall
How tall is Joe? ** Joe is 3+36=<<3+36=39>>39 inches tall
How tall is Sara? ** Sara is 6+39=<<6+39=45>>45 inches tall
#### 45