Question: When does meredith find out pierce is her sister?
Answer: the season ten finale
Disambiguated annotations:
qaPairs: question: What is the name of the episode where Meredith finds out Pierce is her sister?
answer: Fear (Of the Unknown)
question: In what season and episode number did Meredith find out that Pierce is her sister?
answer: Season 10 Episode 24
question: In what overall episode number did Meredith find out that Pierce is her sister?
answer: 220
question: What is the date of the episode where Meredith found out that Pierce is her sister?
answer: May 15, 2014