People
	age
		Kid
		Middle-age
		Senior
		Young Adult
	gender
		Female
		Male
	names
		Me
		YY
	number
		Couple
		Crowd
		Group
	relation
		Family
		Friend
metaInfo
	color
		B&W
place
	Australia
	China
	Germany
	United States
		Kentucky
			Lexington
				University of Kentucky
shooting
	Flare
	Focusing
		Blurred
		Blurred Background
		Blurred Foreground
		In Focus
subject
	Animal
		Bird
		Domestic Animal
		Insect
		Pet
		Vermin
		Wild Animal
	Genre
		Landscape
		Portrait
		Street
	Plants
		Flower
		Fruit
		Grass
		Leaves
		Tree
	action
		Cook
		Eat
		Perform
			Dance
			Sing
		Shoot
		Sit
		Sleep
		Sport
		Work
	architecture
		Beach
		Billboard
		Bridge
		Building
		Business
		Cityscope
		Construction
		Fence
		Graffiti
		Lamp
		Parking
		Road
		Sign
		Statue
	enviornment
		Indoor
		Outdoor
		weather
			Rain
			Snow
	event
		Concert
		Holiday
		Parade
	nature
		Cloud
		Lake
		Moon
		Rainbow
		River
		Sea
		Stone
	phenomena
		Reflection
	property
	small object
		Art
			Painting
			Sculpture
		Decoration
		Electronic
		Food
		Furniture
		Instrument
		Machine
	transportation
		Bike
		Car
		Plane
		Ship
		Train
technicality
	Film
	HDR
	LOMO
time
	seasons
		Autumn
		Spring
		Summer
		Winter
	time of day
		Day
		Night
		Sunrise
		Sunset