premise: A group of four men and to women are at a meeting and paying close attention to someone or something. hypothesis: The people are in a meeting.
entailment: "Group of four men and two women" can also be stated as "people," as is sentence 2. "in" and "at" are interchangable prepositions in this case. "a meeting" is the direct object of both verbs. The primary difference is that sentence 1 has a conjunction and an additional sentence.