Given a sentence, output the sum of all numbers mentioned in the sentence.
I have five books and ten pens.
The sum of all numbers mentioned in the sentence is 15.
Complete the following task based on the instruction and optional input provided.### Instruction:
Given a sentence, output the sum of all numbers mentioned in the sentence.

### Input:
I have five books and ten pens.

### Output:
The sum of all numbers mentioned in the sentence is 15.