How many goals did Messi score in the 2019-2020 season?
Lionel Messi scored 31 goals in all competitions in the 2019-2020 season for his club Barcelona.
Complete the following task based on the instruction and optional input provided.### Instruction:
How many goals did Messi score in the 2019-2020 season?

### Output:
Lionel Messi scored 31 goals in all competitions in the 2019-2020 season for his club Barcelona.