scientists concluded that a certain rock is 4.5 billion years old.
(scientists; concluded; that a certain rock is 4.5 billion years old) Context(scientists concluded,List([0, 20))):(a certain rock; is; 4.5 billion years old)
scientists concluded,List([0, 20))
scientists a certain rock
concluded is
that a certain rock is 4.5 billion years old
4.5 billion years old