Table: race_results_4
Columns: result
date
race
venue
group
distance
weight_kg
jockey
winner_2nd

Question: How man teams had a total weight of 57.5?
SQL: SELECT COUNT("group") FROM race_results_4 WHERE "weight_kg" = '57.5'

Question: List the weight for 56 kilograms.
SQL: SELECT "distance" FROM race_results_4 WHERE "weight_kg" = '56'

Question: List the weight for 56.5 kilograms.
SQL: SELECT "race" FROM race_results_4 WHERE "weight_kg" = '56.5'