How old is it? Rock layers, rock clocks, amber and the long story of life, sentence 0

Look at the stripes in a cliff: each stripe is a layer of mud, sand or ash that settled on top of the one before, like books piled on a desk, so the lowest layers are usually the oldest.

Who acts: you, stripe, sand, lowest layers · What happens: look, be, settle, pile · To what, where: layer, books, desk

This is a sentence of the lesson «How old is it? Rock layers, rock clocks, amber and the long story of life» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (you, stripe, sand, lowest layers), what happens, when and where, as Mova's frames read it from the tree.

The tree

Pragmatics

form

command

act

request

voice

narrator

polarity

none

teacher

kept the draft

One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/biology/276-how-old-is-it-rock-layers-rock-clocks-amber-and-the-long-story-of-life/0/