With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Muhammad was a person.
text_B: Maine Central Railroad Class N locomotives were intended for main line passenger service .. Maine Central Railroad. Maine Central Railroad. They were of 4-6-0 wheel arrangement in the Whyte notation , or `` 2 ` C '' in UIC classification .. 4-6-0. 4-6-0. wheel arrangement. wheel arrangement. Whyte notation. Whyte notation. UIC classification. UIC classification. All were built at the Schenectady Locomotive Works which became the American Locomotive Company -LRB- ALCO -RRB- in 1901 .. ALCO. American Locomotive Company. Schenectady Locomotive Works. Schenectady Locomotive Works. American Locomotive Company. American Locomotive Company. They replaced earlier class L 4-4-0 locomotives beginning in 1899 .. class L. Maine Central class L 4-4-0. 4-4-0. 4-4-0. They were transferred to branch line passenger service as replaced by class C 4-6-2 locomotives beginning in 1907 .. class C. Maine Central class C 4-6-2. 4-6-2. 4-6-2. Most were scrapped during the Great Depression and none survived World War II .. Great Depression. Great Depression. World War II. World War II
not_related.