Sentence:  Like the technically astounding and spiritually hollow production numbers, however, Blunt can't situate the sentimental energy in a deeper foundation. Her excellence gets left in a sort of vacuum when paired with the fully extraneous train wreck of a visit with Meryl Streep as kooky Poppins cousin Topsy or some discomfiting <WSD>soft shoe</WSD> from a creaky Dick Van Dyke. 
Meaning of the word marked with <WSD> tags:  A kind of tap dancing performed in soft-soled shoes, popular in vaudeville.