A biologist needs to be able to make good use of microscopes to help his observations.
(A biologist; to be; able to make good use of microscopes) (A biologist; needs; to be able to make good use of microscopes) Context(A biologist needs,List([0, 17))):(A biologist; needs to make; good use of microscopes to help his observations)
A biologist needs,List([0, 17))
A biologist A biologist A biologist
to be needs needs to make
able to make good use of microscopes
to be able to make good use of microscopes
good use of microscopes to help his observations