Conversation so far:
How many times did Harriet Tubman get married?
Harriet Tubman was married twice.
When did she get married to John Tubman?
Around 1844, Harriet Tubman married a free black man named John Tubman.
How many children did Harriet Tubman and John Tubman have?
Harriet Tubman had one adopted child, Gertie.
How did Harriet Tubman and John Tubman meet?

Question: When did Harriet first run away?
Self-contained rewrite: When did Harriet Tubman first run away?