On the other hand, I do not have the hard evidence at hand and assume that the RHD does.
( ( On ( the ( other hand ) ) ) ( , ( I ( ( ( do not ) ( ( ( have ( ( the ( hard evidence ) ) ( at hand ) ) ) and ) ( assume ( that ( ( the RHD ) does ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN On) (NP (DT the) (JJ other) (NN hand))) (, ,) (NP (PRP I)) (VP (VBP do) (RB not) (VP (VP (VB have) (NP (NP (DT the) (JJ hard) (NN evidence)) (PP (IN at) (NP (NN hand))))) (CC and) (VP (VB assume) (SBAR (IN that) (S (NP (DT the) (NNP RHD)) (VP (VBZ does))))))) (. .)))
RHD has the hard evidence at hand
( RHD ( has ( ( the ( hard evidence ) ) ( at hand ) ) ) )
(ROOT (S (NP (NNP RHD)) (VP (VBZ has) (NP (NP (DT the) (JJ hard) (NN evidence)) (PP (IN at) (NP (NN hand)))))))