CLEAN : Coverage of wars terrorism scoop Pulitzer Prizes

The transcript discusses Pulitzer Prize winners in various categories. The Associated Press won for its investigation into labor abuse in the seafood industry, freeing 2000 slaves. The Washington Post was recognized for creating a database on police shootings. In drama, the musical 'Hamilton' by Lin Manuel Miranda received the award.

How many slaves were reported to have been freed in the investigation mentioned?

What does the national database created by the Washington Post illustrate?