 That was another-it was evidently another aircraft that hit the tower.
( That ( ( was ( another-it ( ( was evidently ) ( ( another aircraft ) ( that ( hit ( the tower ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That)) (VP (VBD was) (ADJP (JJ another-it) (SBAR (S (VP (VBD was) (ADVP (RB evidently)) (NP (NP (DT another) (NN aircraft)) (SBAR (WHNP (WDT that)) (S (VP (VBD hit) (NP (DT the) (NN tower))))))))))) (. .)))
The tower was too weak to take the impact of the aircraft.  
( ( The tower ) ( ( was ( too ( weak ( to ( take ( ( the impact ) ( of ( the aircraft ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN tower)) (VP (VBD was) (ADJP (RB too) (JJ weak) (S (VP (TO to) (VP (VB take) (NP (NP (DT the) (NN impact)) (PP (IN of) (NP (DT the) (NN aircraft))))))))) (. .)))