Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Richmond, Virginia (CNN) -- A historical society in Virginia, where slavery began in the American colonies in 1619, has discovered the identities of 3,200 slaves from unpublished private documents, providing new information for today's descendants in a first-of-its-kind online database, society officials say. Many of the slaves had been forgotten to the world until the Virginia Historical Society received a $100,000 grant to pore over some of its 8 million unpublished manuscripts -- letters, diaries, ledgers, books and farm documents from Virginians dating to the 1600s -- and began discovering the long-lost identities of the slaves, said society president and CEO Paul Levengood.The Virginia Historical Society finds 3,200 slaves named in private documentsThe unpublished documents are from Virginians' attics, basements and desk drawers"We sold all the negros 43 in number at astonishingly large prices," an 1858 letter saysOne user of the society's free database of slaves finds the owner of his great-great-great-grandfather 
 Question:Those _ families found the old, handwritten papers in attics, basements or desk drawers, Levengood said.

Virginia