Guards would regulate those who entered and departed.
( Guards ( ( would ( regulate ( those ( who ( ( entered and ) departed ) ) ) ) ) . ) )
(ROOT (S (NP (NNPS Guards)) (VP (MD would) (VP (VB regulate) (NP (NP (DT those)) (SBAR (WHNP (WP who)) (S (VP (VP (VBD entered)) (CC and) (VP (VBD departed)))))))) (. .)))
Guards had big guns and swords.
( Guards ( ( had ( big ( ( guns and ) swords ) ) ) . ) )
(ROOT (S (NP (NNPS Guards)) (VP (VBD had) (NP (JJ big) (NNS guns) (CC and) (NNS swords))) (. .)))