Table: satsuki_sho_gi_nakayama
Columns: race_name
grade
racecourse
distance
priority_entry_rights_to_derby

Question: What is the Grade that has Turf 1600m?
SQL: SELECT "grade" FROM satsuki_sho_gi_nakayama WHERE "priority_entry_rights_to_derby" = 'turf 1600m'

Question: What is the Priority-entry-rights to Derby in rank 4?
SQL: SELECT "priority_entry_rights_to_derby" FROM satsuki_sho_gi_nakayama WHERE "race_name" = 4