Sentence:  One Kohnstamm-positive subject who had both arms rise while being tested in the nai ^ ve condition described her subjective experience as follows : `` You feel they 're going up and you 're on a stage and it 's not right for them to do so and then you think maybe that <WSD>'s</WSD> what 's supposed to happen '' . 
Meaning of the word marked with <WSD> tags:  be identical to; be someone or something