His pain was fairly constant and crampy in nature.
 the patient has abdominal pain
(ROOT (S (NP (PRP$ His) (NN pain)) (VP (VBD was) (ADJP (ADJP (RB fairly) (JJ constant)) (CC and) (ADJP (JJ crampy) (PP (IN in) (NP (NN nature)))))) (. .)))
(ROOT (S (NP (DT the) (NN patient)) (VP (VBZ has) (NP (JJ abdominal) (NN pain)))))
( ( His pain ) ( ( was ( ( ( fairly constant ) and ) ( crampy ( in nature ) ) ) ) . ) )
( ( the patient ) ( has ( abdominal pain ) ) )