Assertion: backhand | /r/CapableOf | evolve to a two-handed
Facets:
value: in the last 50 years
type: TEMPORAL
Source sentences:
text: In the last 50 years the backhand has evolved from a predominantly one-handed stroke to a two-handed.
text: In the last 50 years the backhand has evolved from a predominantly one-handed groundstroke to a two-handed shot.