Assertion: comet's discovery | /r/HasSubevent | annual expeditions
Facets:
value: by u.s. and japanese teams
type: OTHER
Source sentences:
text: 1969 : Discovery of meteorites in a small area of Antarctica leads to annual expeditions by U.S. and Japanese teams.
text: : Discovery of meteorites in a small area of Antarctica leads to annual expeditions by U.S. and Japanese teams.