These rules were not used extensively.
( ( These rules ) ( ( ( were not ) ( used extensively ) ) . ) )
(ROOT (S (NP (DT These) (NNS rules)) (VP (VBD were) (RB not) (VP (VBN used) (ADVP (RB extensively)))) (. .)))
These guidelines were not used a lot.
( ( These guidelines ) ( ( ( were not ) ( used ( a lot ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS guidelines)) (VP (VBD were) (RB not) (VP (VBN used) (NP (DT a) (NN lot)))) (. .)))