Assertion: energy cosmic ray | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
value: after all
type: TEMPORAL
Source sentences:
text: High-energy cosmic rays are so rare, though, that it would be impossible to lift into space a detector big enough to capture a significant number of them, so we must find ways to detect them at the earth's surface.
text: The most high energy cosmic rays are very rare after all.
text: The higher energy cosmic rays are rare," he continued.