concepts: blow bubble chew gum pop
target: A girl blows and pops bubbles while chewing her gum.
references: A girl blows and pops bubbles while chewing her gum. I blew a big bubble while chewing gum and then the bubble went pop. A boy blows and pops bubbles while chewing gum Ann is chewing the gum to blow a bubble until it pops. A woman chewing gum blows a bubble until it pops.