For example, in the case of the liquid nitrogen experiment, it serves to demonstrate the fact that the liquid nitrogen is freezing the water in the flower, and so on.
(the liquid nitrogen; is freezing; the water in the flower) (it; serves; to demonstrate the fact that the liquid nitrogen is freezing the water in the flower, and so on; L:in the case of the liquid nitrogen experiment) Context(it serves,List([60, 69))):(it; serves to demonstrate; the fact that the liquid nitrogen is freezing the water in the flower, and so on)
it serves,List([60, 69))
the liquid nitrogen it it
is freezing serves serves to demonstrate
the water in the flower
to demonstrate the fact that the liquid nitrogen is freezing the water in the flower, and so on L:in the case of the liquid nitrogen experiment
the fact that the liquid nitrogen is freezing the water in the flower, and so on