Table: race_results_16
Columns: result
date
race
venue
group
distance
weight_kg
jockey
winner_2nd

Question: What was the weight in kg when the jockey was B. York? 
SQL: SELECT "weight_kg" FROM race_results_16 WHERE "jockey" = 'B. York'

Question: What was the result of the race where the jockey was J. Marshall? 
SQL: SELECT "result" FROM race_results_16 WHERE "jockey" = 'J. Marshall'