premise: A frowning old man in a military cap and a civilian suit stands amongst a crowd of people outdoors carrying signs and balloons. hypothesis: A man is watching a group of people having a hot dog eating contest.
contradiction: These people cannot be having a hotdog eating contest while carrying around signs and balloons.|contradiction: A man either is standing amongst a crowd of people outdoors carrying signs and balloons or is watching a group of people having a hot dog eating contest.|contradiction: Frowning old man or just a man. Stands or watching. Carrying signs and balloons or having a hot dog eating contest.