With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A quarry is where rock fragments of particular size have been excavated.
text_B: Leesa Streifler -LRB- born 1957 -RRB- is a Canadian multi-disciplinary artist and art professor who lives in Regina , Saskatchewan .. Her works have been exhibited extensively in solo and group exhibitions , nationally and internationally , and appear in the permanent collection of the National Gallery of Canada and the Canadian Museum of Contemporary Photography .. National Gallery of Canada. National Gallery of Canada. Canadian Museum of Contemporary Photography. Canadian Museum of Contemporary Photography
not_related.