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 | Year built | Builder | Status | Notes |
| --- | --- | --- | --- | --- |
| E371 | 1892 | David Munro & Co., South Melbourne | Static display | On static display at Maldon station. |
| D3 619 | 1914 | Newport Workshops | Stored | Obtained from SSR Bendigo in late 2011. Transferred to Maldon January 2012. Stored for future restoration. |
| D3 646 | 1905 | Newport Workshops | Stored | Non-operational. Had been plinthed at Maryborough railway station until acquisition by the VGR for preservation in the 1990s. Stored at Maldon for future restoration. |
| K157 | 1940 | Newport Workshops | Stored | Non-operational. Stored at Maldon for future restoration. |
| K160 | 1940 | Newport Workshops | Overhaul | Withdrawn from traffic mid 2012, transferred by road to Newport Workshops in January 2014 for overhaul by Steamrail Victoria |
| J515 | 1954 | Vulcan Foundry | Operational | Returned to traffic in mid April 2012. Loaned from Seymour Railway Heritage Centre |
| J549 | 1954 | Vulcan Foundry | Operational | Returned to service during November 2013 following a 9 and a half year overhaul. |
Question:
how many of the locomotives were built before 1940?
Answer:
3