Assertion: practical man carrying hovercraft | /r/CapableOf | carry out several test programmes
Facets:
value: in 1959
type: TEMPORAL
value: to 1961
type: TEMPORAL
Source sentences:
text: The British aircraft manufacturer Saunders Roe[?] developed the first practical man-carrying hovercraft, the SR-N1[?], which carried out several test programmes in 1959 to 1961, including a cross-channel run.