Table: boxers_quintuple_champs
Columns: number
name
titles
date
opponent
result
defenses

Question: What titles were fought for on 1997-04-12?
SQL: SELECT "titles" FROM boxers_quintuple_champs WHERE "date" = '1997-04-12'

Question: What is the date of the match for the lineal super lightweight (140)?
SQL: SELECT "date" FROM boxers_quintuple_champs WHERE "titles" = 'Lineal Super lightweight (140)'

Question: What is the date of the match for the wbc flyweight (112) title?
SQL: SELECT "date" FROM boxers_quintuple_champs WHERE "titles" = 'WBC Flyweight (112)'