CONCEPTS: erupt, geyser, water

GEN: high geyser of water erupts out of the sparsely vegetated earth .

CONCEPTS: find, length, triangle

GEN: example solve for x to find the missing lengths of the right triangle .

CONCEPTS: drape, moss, tree

GEN: moss draped trees by the porch

CONCEPTS: fly, island, plane

GEN:
A plane is flying over a small island