' This is a special paper with chemicals in it that change the paper's color to many different shades depending on it's pH.
(chemicals in it; change; the paper's color; to many different shades) (many different shades; depending; on) (it; 's; pH) Context(it 's,List([115, 119))):(This; is; a special paper with chemicals in it)
it 's,List([115, 119))
chemicals in it many different shades it This
change depending 's is
the paper's color to many different shades
on
pH
a special paper with chemicals in it