We have the word of history: no task is impossible to Dave Hanson."  Dave looked at the smug face and a slow grin crept over his own, in spite of himself.
Dave frowned, feeling increasingly nervous about his ability to complete the task.
mnli hypothesis: Dave frowned, feeling increasingly nervous about his ability to complete the task. premise: We have the word of history: no task is impossible to Dave Hanson."  Dave looked at the smug face and a slow grin crept over his own, in spite of himself.