S.21
{'<entity_0>': 'Damen Schelde Naval Shipbuilding', '<entity_1>': 'S.21', '<entity_2>': 'Netherlands'}
[['S.21', 'country', 'Netherlands'], ['S.21', 'manufacturer', 'Damen Schelde Naval Shipbuilding']]
The <entity_1> was a proposed <entity_2> fighter of the late 1930s and early 1940s. The <entity_2> shipbuilding company <entity_0> of Vlissingen entered the aviation business in 1935, when it recruited most of the technical staff, including Chief Designer T. E. Slot, of Pander & Son, which had failed in 1934. The prototype <entity_1> was almost complete when Germany invaded the <entity_2> in May 1940, with the De Schelde factory and the prototype <entity_1> being seized by German troops.
['proposed aircraft']