A group of people , some sitting and some standing , seem to be enjoying a sort of party , as there are streamers and balloons around them .
It is likely that a group of people are sitting and standing at a party outside .
It is likely that a group of people are sitting and standing at a party outside .
Chances are slight that a group of people are sitting and standing at a party outside .
A group of people are sitting and standing at a party outside .