He writes that when PERSON@1 was absent from the workshop , his young apprentice painted such a lifelike fly on the face of the painting that PERSON@1 was working on , that he tried several times to brush it off .

PERSON@2 writes that when PERSON@1 was away from the workshop , PERSON@3 painted a fly on the face of the painting that his master was working on . When PERSON@1 came back , he tried several times to brush the fly off .
