In one spatial solution for this measurement problem, one would generate an image of a tree and then mentally move the figure of the boy up along the height of the tree, one boy's height at a time, to estimate the height of the tree.
(one; would generate; an image of a tree; L:In one spatial solution for this measurement problem) (one; mentally move; the figure of the boy; up; along the height of the tree; T:then)
one one
would generate mentally move
an image of a tree L:In one spatial solution for this measurement problem
the figure of the boy up along the height of the tree T:then