Mr David Herman, head of GM's local operations accused Mr Gerhardt Schroeder, prime Minister of Lower Saxony and a member of the VW supervisory board, of trying to use his political weight to influence the investigations by state prosecutors in Hesse into claims of industrial espionage against GM.
The original statement contains less than 28 sentences
There are nowhere near that many sentences in the statement! I think the model got confused because it can't count the sentences. 
( z1 contain :ARG0 ( z2 thing :ARG1-of ( z3 state ) :mod ( z4 original ) ) :ARG1 ( z5 less-than :op ( z6 sentence :quant 28 ) ) )