Table:
text: Soo Line locomotives
Class F: 2-8-0
Class F: 2-8-0
Class_ Wheel_arrangement Fleet_numbers Manufacturer Year_made Quantity_made Quantity_preserved
F-10 2-8-0 473–474 Alco -Schenectady 1909 2 0
F-11 2-8-0 475–484 Alco -Schenectady 1910 10 0
F-12 2-8-0 485–499 Alco -Schenectady 1912–1913 15 0
F-20 2-8-0 2400–2424 Alco -Schenectady 1903–1907 25 1
F-21 2-8-0 2425–2428 Alco -Schenectady 1909 4 1
F-22 2-8-0 2429–2443 Alco -Schenectady 1911 15 1
F-23 2-8-0 2444–2450 Alco -Schenectady 1914 7 0

text: Soo Line locomotives
Class F: 2-8-0
Class F: 2-8-0
Class_ Wheel_arrangement Fleet_numbers Manufacturer Year_made Quantity_made Quantity_preserved
2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation 2-8-0 — oOOOO — Consolidation
F-1 2-8-0 403–405, 407–412 Schenectady 1893 9 0
F-2 2-8-0 406 Schenectady 1893 1 0
F-3 2-8-0 413–416 Schenectady 1893 4 0
F-4 2-8-0 417 Schenectady 1893 1 0
F-6 2-8-0 400–402, 418–427 Rhode Island 1893 13 0
F-7 2-8-0 428–430 Schenectady 1900 3 0
F-8 2-8-0 431–444 Alco -Schenectady 1902–1903 14 1
F-9 2-8-0 445–472 Alco -Schenectady 1905–1906 28 1

Question: What is the quantity preserved if 4 of the F-21 class were made for the F 2 8 0 class of Soo Line locomotives?

Question: Which class of Soo Line locomotives received and made 2 to Soo Line Class F 2 8 0?