premise: A man and woman talk to another woman, all looking concerned, in a room being decorated with streamers and balloons. hypothesis: Some people are throwing a surprise birthday party.
neutral: There is nothing in sentence one to indicate the party is a surprise birthday party.|neutral: You can't tell they are throwing a surprise birthday party just because people look concerned in a room decorated with streamers and balloons.|neutral: Not all streamers and balloons are for a surprise birthday party.