<s> def grade ( tid , answer ) : <EOL> if answer . find ( "<STR_LIT>" ) != - <NUM_LIT:1> : <EOL> return { "<STR_LIT>" : False , "<STR_LIT:message>" : "<STR_LIT>" } <EOL> if answer . find ( "<STR_LIT>" ) != - <NUM_LIT:1> : <EOL> return { "<STR_LIT>" : True , "<STR_LIT:message>" : "<STR_LIT>" } <EOL> return { "<STR_LIT>" : False , "<STR_LIT:message>" : "<STR_LIT>" } </s>
