"(Everything/something/nothing) is purple."
"Everything is purple."
"(Everyone/someone/no one) is riding bikes."
"Everyone is riding bikes."
"(Everyone/no one/something) is home."
"No one is home."
"There is (someone/something/everything) in the fridge."
"There is something in the fridge."
"(Someone/no one/something) is happy."
"No one is happy."
"(Nothing/everyone/someone) is happy."
"Everyone is happy."
"(Everyone/someone/nothing) is golfing."
"Somone is golfing."
"(No one/something/everyone) likes ice cream."
"Everyone likes ice cream."
"(Someone/nothing/everyone) is wearing white."
"Someone is wearing white."
"There is (someone/something/nothing) in the box."
"There is nothing in the box."
"(Everything/someone/everyone) is asleep."
"Everyone is asleep."
"There is (everyone/no one/nothing) in the fridge."
"There is nothing in the fridge."