( ( At ( that time ) ) ( we ( ( were ( to ( have ( ( a lunar ) ( ( eclipse ( two days ) ) ( from then ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN At) (NP (DT that) (NN time))) (NP (PRP we)) (VP (VBD were) (S (VP (TO to) (VP (VB have) (S (NP (DT a) (NN lunar)) (VP (VB eclipse) (NP (CD two) (NNS days)) (PP (IN from) (NP (RB then))))))))) (. .)))
At that time we were to have a lunar eclipse two days from then.
(ROOT (S (NP (CD Two)) (VP (VBZ is) (NP (NP (DT the) (JJ minimum) (NN number)) (PP (IN of) (NP (NP (NNS times)) (SBAR (S (NP (DT a) (JJ partial) (NN lunar) (NN eclipse)) (VP (MD will) (VP (VB occur) (NP (DT each) (NN year)))))))))) (. .)))