context: three people posing for the picture with big smiles and blood on the faces of two people
hypothesis: There is a very good chance that three people posing for a picture with smiles and two are dressed up as zombies.
valid_hypothesis: There is a very good chance that three people posing for a picture with smiles and two are dressed up as zombies.
invalid_hypothesis: Chances are slight that three people posing for a picture with smiles and two are dressed up as zombies.
hypothesis_assertion: Three people posing for a picture with smiles and two are dressed up as zombies.