Sentence:  The resulting sequence of "covert wh-pronoun + Complementiser" has an overt counterpart in <WSD>nonstandard</WSD> varieties of English, as the following example (recorded from a BBC radio programme) illustrates:/  (91)      England put themselves in a position ["whereby that" they took a lot of credit for tonightʼs game] (Ron Greenwood, BBC radio 4) 
Meaning of the word marked with <WSD> tags:  Not conforming to the standard variety.