Task: Question Answering
Input (English): Passage: Gestational sac -- The yolk sac and embryo should be readily identifiable when the gestational sac reaches a certain size -- a yolk sac should be seen when the gestational sac is 20mm and a fetal pole should be seen when the gestational sac reaches 25mm.
Question: are gestational sac and yolk sac the same
Output (English): 0