The valley networks and highly eroded landforms of the late Noachian period imply liquid water was stable at that time.
(The valley networks and highly eroded landforms of the late Noachian period; imply; liquid water was stable at that time) Context(The valley networks and highly eroded landforms of the late Noachian period imply,List([0, 81))):(liquid water; was; stable; T:at that time)
The valley networks and highly eroded landforms of the late Noachian period imply,List([0, 81))
The valley networks and highly eroded landforms of the late Noachian period liquid water
imply was
liquid water was stable at that time
stable T:at that time