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:
| Locomotive superintendent | GNoSR Class | LNER class | Quantity Built | Passed to LNER | Manufacturer | Date introduced |
| --- | --- | --- | --- | --- | --- | --- |
| William Cowan (1857–83) | K | D47/2 | 6.0 | 3.0 | Neilson & Co. | 1866 |
| William Cowan (1857–83) | L | D47/1 | 6.0 | 6.0 | Neilson & Co. | 1876 |
| William Cowan (1857–83) | M | D45 | 9.0 | 9.0 | Neilson & Co. | 1878 |
| William Cowan (1857–83) | C | D39 | 3.0 | 3.0 | Neilson & Co. | 1879 |
| James Manson (1883–90) | A | D44 | 6.0 | 6.0 | Kitson & Co. | 1884 |
| James Manson (1883–90) | G | D48 | 3.0 | 3.0 | Kitson & Co. | 1885 |
| James Manson (1883–90) | D | J90 | 6.0 | 6.0 | Kitson & Co. | 1884 |
| James Manson (1883–90) | E | J91 | 3.0 | 3.0 | Kitson & Co. | 1885 |
| James Manson (1883–90) | N | D46 | 2.0 | 2.0 | GNSR Kittybrewster | 1887 |
| James Manson (1883–90) | O | D42 | 9.0 | 9.0 | Kitson & Co. | 1888 |
| James Manson (1883–90) | P | D43 | 3.0 | 3.0 | R. Stephenson & Co. | 1890 |
| James Manson (1883–90) | Q | D38 | 3.0 | 3.0 | R. Stephenson & Co. | 1890 |
| James Johnson (1890–94) | R | G10 | 9.0 | 9.0 | Neilson & Co. | 1893 |
| James Johnson (1890–94) | S | D41 | 6.0 | 6.0 | Neilson & Co. | 1893 |
| William Pickersgill (1894–1914) | T | D41 | 26.0 | 26.0 | Neilson & Co. | 1895–98 |
| William Pickersgill (1894–1914) | V | D40 | 5.0 | 13.0 | Neilson & Co. | 1899–1900 |
| William Pickersgill (1894–1914) | V | D40 | 8.0 | 13.0 | GNSR Inverurie | 1910–15 |
| Thomas E. Heywood (1914–23) | Y | Z5 | 2.0 | 2.0 | Manning Wardle | 1915 |
| Thomas E. Heywood (1914–23) | X | Z5, later Z4 | 2.0 | 2.0 | Manning Wardle | 1915 |
| Thomas E. Heywood (1914–23) | F | D40 | 6.0 | 8.0 | North British Loco. Co. | 1920 |
| Thomas E. Heywood (1914–23) | F | D40 | 2.0 | 8.0 | GNSR Inverurie | 1921 |
Question:
Who was the Locomotive superintendent has a NER class of d45?
Answer:
William Cowan (1857–83)