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:
| Railway | Builder | Built | Wheels | Location | ObjectNumber |
| --- | --- | --- | --- | --- | --- |
| SECR | SECR Ashford | 1901 | 4-4-0 | York | 1975-7006 |
| MR | MR Derby | 1902 Midland Railway 1000 was rebuilt in 1914. | 4-4-0 | Bo'ness | 1975-7018 |
| GNR | GNR Doncaster | 1902 | 4-4-2 | Barrow Hill | 1975-7005 |
| GWR | GWR Swindon | 1903 | 4-4-0 | Toddington | 1978-7025 |
| GER | GER Stratford | 1904 | 0-6-0T | Bressingham | 1975-7003 |
| GER | GER Stratford | 1905 | 0-6-0 | Barrow Hill | 1978-7026 |
| GWR | GWR Swindon | 1905 | 2-8-0 | Shildon | 1976-7001 |
| GWR | Swindon Works | 1907 | 4-6-0 | Swindon | 1978-7027 |
| LTSR | Stephenson | 1909 | 4-4-2T | Bressingham | 1978-7028 |
| Longmoor | Avonside | 1910 | 0-6-0ST | Basingstoke | 2008-7159 |
| GCR | GCR Gorton | 1911 | 2-8-0 | GCR | 1975-7027 |
| NER | NER Darlington | 1919 | 0-8-0 | Darlington | 1978-7029 |
| GCR | GCR Gorton | 1920 | 4-4-0 | Barrow Hill | 1978-7030 |
| LNWR | LNWR Crewe | 1921 | 0-8-0 | Bury | 1978-7031 |
| NSR | NSR Stoke | 1922 | 0-6-2T | Shildon | 1978-7032 |
Question:
Who was the builder in 1920?
Answer:
GCR Gorton