Some phenomena that scientists want to observe are so small that they need a magnifying glass, or even a microscope.
(Some phenomena that scientists want to observe; are; so small that they need a magnifying glass, or even a microscope) (they; need; a magnifying glass) (scientists; want; to observe) Context(scientists want,List([20, 35))):(Some phenomena; to observe; scientists)
scientists want,List([20, 35))
Some phenomena that scientists want to observe they scientists Some phenomena
are need want to observe
so small that they need a magnifying glass, or even a microscope
a magnifying glass
to observe
scientists