He became a visiting fellow of Princeton ( 1921-1922 ) before becoming a fellow of Jesus College in 1921 and then at St John 's College , Cambridge ( 1923-1931 ) .
PRON VERB DET VERB NOUN ADP PROPN ( NUM ) ADP VERB DET NOUN ADP PROPN PROPN ADP NUM CCONJ ADV ADP PROPN PROPN PART PROPN , PROPN ( NUM ) .