general_fact: 97 is the atomic number of berkelium.
math_fact: 97 is the smallest factor of one more than the product of the first twenty-five terms of the Euclid–Mullin sequence, making it the twenty-sixth term.
trivia: 97 is the number of minutes it takes the Hubble space telescope to complete an orbit around the Earth.
historical_date: April 6th is the day in 1926 that Varney Airlines makes its first commercial flight (Varney is the root company of United Airlines).