Scientific observation shows that erosion of the Grand Canyon takes place at a rate of 1 ft. every 5,000 years.
(Scientific observation; shows; that erosion of the Grand Canyon takes place at a rate of 1 ft. every 5,000 years) Context(Scientific observation shows,List([0, 28))):(erosion of the Grand Canyon; takes; place; T:at a rate of 1 ft. every 5,000 years)
Scientific observation shows,List([0, 28))
Scientific observation erosion of the Grand Canyon
shows takes
that erosion of the Grand Canyon takes place at a rate of 1 ft. every 5,000 years
place T:at a rate of 1 ft. every 5,000 years