Casual:
(1) Bird Sound
(2) Fire Truck
(3) Subway
(4)Traffic
Reduced:
(1) Abnormal walk
(2)Bank door
(3)Bank ATM
(4) Construction/Mechanics
Semantic:
(1) Turkish Phone Call
(2)CVS check out
(3)Chinese conversation
(4)Stranger on her phone at the Union Square
(5)Sweepers at the Union Square
