This requires that they take in nutrients, which they use to provide energy for the work that cells do and to make 
(the work; do; cells) (This; requires; that they take in nutrients) Context(This requires,List([0, 13))):(they; take; L:in nutrients) (nutrients; use; to provide energy for the work that cells do and to make) Context(nutrients use,List([32, 57))):(they; to provide; energy; for the work) Context(nutrients use,List([32, 57))):(they; to to make; )
This requires,List([0, 13)) nutrients use,List([32, 57)) nutrients use,List([32, 57))
the work This they nutrients they they
do requires take use to provide to to make
cells
that they take in nutrients
L:in nutrients
to provide energy for the work that cells do and to make
energy for the work