( Drought ( ( means ( there ( has ( ( been ( no rain ) ) ( for ( along time ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Drought)) (VP (VBZ means) (SBAR (S (NP (EX there)) (VP (VBZ has) (VP (VBN been) (NP (DT no) (NN rain)) (PP (IN for) (PP (IN along) (NP (NN time))))))))) (. .)))
Drought means there has been no rain for along time.
(ROOT (S (NP (NNS Droughts)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (EX there)) (VP (VBZ is) (ADJP (JJ little) (PP (TO to) (NP (NP (DT no) (NN rain)) (PP (IN in) (NP (NP (DT a) (NN period)) (PP (IN of) (NP (NN time)))))))))))) (. .)))