CREATE TABLE table_name_25 (date VARCHAR(255), time VARCHAR(255), age_group VARCHAR(255), pool VARCHAR(255))
What date did the 90-94 year old have a tie of 1:25.91 at the LC pool?
    
SQL: SELECT date FROM table_name_25 WHERE age_group = "90-94" AND pool = "lc" AND time = "1:25.91"