instruction:
In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
question:
who led an expedition to explore the louisiana territory
answer:
Lewis and Clark


question:
what does sandstone turn into under heat and pressure
answer:
quartzite


question:
who won women's figure skating in 1994
answer:

Oksana Baiul