Built in a.d. 715 to help measure the peak and trough of the Nile flood.
( ( ( ( Built ( in a.d. ) ) ( 715 ( to ( help measure ) ) ) ) ( ( the ( ( peak and ) trough ) ) ( of ( the ( Nile flood ) ) ) ) ) . )
(ROOT (SINV (VP (VBN Built) (PP (IN in) (NP (NN a.d.)))) (VP (VBD 715) (S (VP (TO to) (VP (VB help) (NP (NN measure)))))) (NP (NP (DT the) (NN peak) (CC and) (NN trough)) (PP (IN of) (NP (DT the) (NNP Nile) (NN flood)))) (. .)))
It said the Nile flood was 12 feet deep.
( It ( ( said ( ( the ( Nile flood ) ) ( was ( ( 12 feet ) deep ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD said) (SBAR (S (NP (DT the) (NNP Nile) (NN flood)) (VP (VBD was) (ADJP (NP (CD 12) (NNS feet)) (JJ deep)))))) (. .)))