For instance , when building translation units in EBMT approaches ( Richardson et al. , 2001 ) , ( Aramaki , 2001 ) , ( AlAdhaileh & Tang , 1999 ) , ( Sato & Nagao , 1990 ) , ( Sato , 1991 ) , ( Sadler & Vendelmans , 1990 ) , etc. , where S-SSTC can be used to represent the entries of the BKB or when S-SSTC used as an annotation schema to find the translation correspondences ( lexical and structural correspondences ) for transferrules ' extraction from parallel parsed corpus ( Menezes & Richardson , 2001 ) , ( Watanabe et al. ,