all river waters originate from and return to the ocean Precipitation may remain on land in the form of snow, or may run off in river systems Rivers originate 
(all river waters; originate; from) (all river waters; return; to the ocean) (Precipitation; may remain; on land in the form of snow)
all river waters all river waters Precipitation
originate return may remain
from
to the ocean
on land in the form of snow