Analyze if the hypothesis is a logical continuation of the premise. Premise: There is nothing more to be done here, I think, unless, he stared earnestly and long at the dead ashes in the grate.  Hypothesis: There isn't anything left to do. 
There is nothing more to be done here, I think, unless, he stared earnestly and long at the dead ashes in the grate. ###There isn't anything left to do. 