Conversation so far:
who was the first pinch-hitter to hit a home run in a world series
Yogi Berra was the first pinch-hitter to hit a home run in a world series
What year did Yogi berra first hit a home run as a pinch-hitter in a world series
Yogi Berra was the first pinch-hitter to hit a home run in a world series in 1947
for what team did Yogi berra first hit a home run as a pinch-hitter in a world series
Yogi Berra was the first pinch-hitter to hit a home run in a world series for the New York Yankees

Question: against who
Self-contained rewrite: Against who did Yogi berra first hit a home run as a pinch-hitter in a world series