Assertion: kayak | /r/CapableOf | become difficult
Facets:
value: very
type: DEGREE
value: to increase its speed
type: PURPOSE
Source sentences:
text: Practically speaking, when a kayak attains its hull speed, it becomes very difficult to further increase its speed, unless a disproportional amount of energy is used for this purpose, and the big majority of people simply don’t have such stamina.