def resolve_pos(token):
<EOL>if token.pos == "<STR_LIT>":<EOL><INDENT>if re.match(r"<STR_LIT>", token.surface):<EOL><INDENT>return token.pos + "<STR_LIT>"<EOL><DEDENT>if re.match(r"<STR_LIT>", token.surface):<EOL><INDENT>return token.pos + "<STR_LIT>"<EOL><DEDENT>return token.pos + "<STR_LIT>"<EOL><DEDENT>return token.pos<EOL>
If necessary, add a field to the POS tag for UD mapping.
    Under Universal Dependencies, sometimes the same Unidic POS tag can
    be mapped differently depending on the literal token or its context
    in the sentence. This function adds information to the POS tag to
    resolve ambiguous mappings.