article_snippet: the blast ended the life of 8-year-old Martin Richard, and also robbed his sister of one of her legs .
article_snippet: the blast killed eight-year-old Martin Richard, as well as Lingzi Lu, a 23-year-old student.
article_snippet: Martin's younger sister, Jane, lost a leg in the blast and hundreds were injured.
article_snippet: Also testifying Monday was a woman whose close friend, 23-year-old Lingzi Lu, died in the second bomb blast.