Answer the following question: Facts:   - sport: swimming , diving    - caption: joseph callens in 1922      - birth date: 20 march 1894    - image: joseph callens 1922.jpg   Based on these bullet points, write a short biography describing the life of joseph callens .
Answer:
renni joseph callens was a belgian freestyle swimmer and diver .he competed at the 1920 summer olympics in the 3 meter springboard and at the 1924 summer olympics in the 4 × 200 m freestyle relay , but failed to reach the finals .