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

Question: What group info is available for the 56.5 kg weight?
SQL: SELECT "group" FROM horse_race_results WHERE "weight_kg" = '56.5'

Question: What was the result for the railway stakes race?
SQL: SELECT "result" FROM horse_race_results WHERE "race" = 'Railway Stakes'