they are in a park 
they are playing Ultimate 
they are playing Ultimate Frisbee 
he is running on the grass 
she is wearing a yellow tee shirt 
four people standing in a field
four people playing frisbee in a park
a woman wearing a green shirt
a woman wearing a yellow shirt
a man wearing a black shirt
person wearing yellow shirt
person wearing a red head band
person wearing a pair of shoe
person wearing a white hat
person wearing a black short
person catching a Frisbee
woman wearing a short pant
trees and bushes on ground
woman wearing green shirt
people playing a game of frisbee on a grassy field