(S (NP (NP (DET THE) (N MAN)) (R (RELPRO THAT) (VP+TNS (V2+TNS CHASED) (NP (NAME FIDO))))) (VP+TNS (V1+TNS RETURNED)))


((ROOT (Q (NP+WH (PRONP+WH WHO))
          (VP+TNS (V2+TNS SAW)
                  (NP (NAME MARY))))))