Boulevards were laid out which is why the center of Keystone is not like many of the neighborhoods that developed at the time where they mostly had a grid like layout .
NOUN AUX VERB ADP DET VERB ADV DET NOUN ADP PROPN VERB PART ADP ADJ ADP DET NOUN DET VERB ADP DET NOUN ADV PRON ADV VERB DET NOUN ADP NOUN .