Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Number | Builder | Type | Date | Works number |
| --- | --- | --- | --- | --- |
| 1.0 | Hinkley Locomotive Works | 0-4-4 Forney locomotive | 1877.0 | 1251.0 |
| 2.0 | Hinkley Locomotive Works | 0-4-4 Forney locomotive | 1877.0 | 1261.0 |
| 3.0 | Hinkley Locomotive Works | 0-4-4 Forney locomotive | 1884.0 | 1664.0 |
| 4.0 | Baldwin Locomotive Works | 0-4-4 Forney locomotive | 1886.0 | 8304.0 |
| 5.0 | Portland Company | 0-4-4 Forney locomotive | 1890.0 | 616.0 |
| 6.0 | Portland Company | 0-4-4 Forney locomotive | 1891.0 | 622.0 |
| 7.0 | Portland Company | 0-4-4 Forney locomotive | 1890.0 | 615.0 |
| 8.0 | Baldwin Locomotive Works | 2-4-4 Forney locomotive | 1907.0 | 31826.0 |
| 9.0 | Baldwin Locomotive Works | 2-4-4 Forney locomotive | 1909.0 | 33550.0 |
| 10.0 | Baldwin Locomotive Works | 2-4-4 Forney locomotive | 1916.0 | 42231.0 |
| 15.0 | Baldwin Locomotive Works | 2-6-0 tender | 1891.0 | 11706.0 |
| 16.0 | Baldwin Locomotive Works | 2-6-0 tender | 1892.0 | 12964.0 |
| 17.0 | Baldwin Locomotive Works | 0-4-4 Forney locomotive | 1893.0 | 13276.0 |
| 18.0 | Baldwin Locomotive Works | 2-6-0 tender | 1893.0 | 13733.0 |
| 19.0 | Baldwin Locomotive Works | 2-6-2 tender | 1904.0 | 23874.0 |
| 20.0 | Baldwin Locomotive Works | 0-4-4 Forney locomotive | 1903.0 | 23245.0 |
| 21.0 | Baldwin Locomotive Works | 0-4-4 Forney locomotive | 1904.0 | 23754.0 |
| 22.0 | Baldwin Locomotive Works | 0-4-4 Forney locomotive | 1904.0 | 23755.0 |
| 23.0 | Baldwin Locomotive Works | 2-6-2 tender | 1913.0 | 40733.0 |
| 24.0 | Baldwin Locomotive Works | 2-6-2 tender | 1919.0 | 51803.0 |
Question:
What is the sum of number with type 0-4-4 forney locomotive, number smaller than 20 and works number of 1251?
Answer:
1.0