How many students that graduated from Lincoln College in 2011 belong to the cohort type of Bachelor's/equivalent seeking cohort at 4-year institutions?
Lincoln College refers to chronname = 'Lincoln College'; in 2011 refers to year = 2011; Bachelor's/equivalent seeking cohort at 4-year institutions refers to cohort = '4y bach';
SELECT COUNT(T1.unitid) FROM institution_details AS T1 INNER JOIN institution_grads AS T2 ON T1.unitid = T2.unitid WHERE T1.chronname = 'Lincoln College' AND T2.year = 2011 AND T2.cohort = '4y bach'