Table: race_results_8
Columns: result
date
race
venue
group
distance
weight_kg
jockey
winner_2nd

Question: Where was the 1400 m held?
SQL: SELECT "venue" FROM race_results_8 WHERE "distance" = '1400 m'

Question: What is the group name when 3yo hcp restricted maiden was raced?
SQL: SELECT "group" FROM race_results_8 WHERE "race" = '3yo Hcp Restricted Maiden'

Question: When did the 55 kg participant race?
SQL: SELECT "date" FROM race_results_8 WHERE "weight_kg" = '55'