it is a phrase becuase a phrase is a group of words that may contain either a subject or a verb but not both and the sentence "swimming laps at the pool" only contians a subject becuase, who is swimming laps at the pool?
They excerpt shows details because it over describes the situation that he is in
Just multiply 89 ft by 154 ft and you should get 13, 706ft.
To confirm his high opinion of the woman ,speaker supplies - no evidence at all.
