How to address key selection criteria in a cover letter<br>Read the key selection criteria thoroughly if they're provided. Read the criteria through several times to ensure you understand what each one means. If you're having trouble with one, research it to clarify the meaning.
Research anything you have trouble with.
It says if you have trouble with one, research it to clarify the meaning. 
( z1 research :mxde imperative :ARG0 ( z2 you ) :ARG1 ( z3 anything :ARG0-of ( z4 trouble :ARG1 z2 ) ) )