if only one statement of responsibility is present on the SOI, then it is core
if more than one statement of responsibility is present on the SOI, then only the one that you choose to record first is core:
if you choose to record all statements, then enter them in the order specified (see Data entry order, below)
if you do not choose to record all statements, then only the first statement in the order specified below is core, but be sure to include any statements that identify creators (see 2.4.2.3 2nd paragraph)
data for this element must be Form transcribed, but 1.7, order, and optional omissions: the data must match word-for-word and letter-for-letter (except for order, optional omissions, exceptions, error, or old cataloging rules)
if data is given in square brackets, it is 'supplied' data, and comes from outside the resource itself, and so can be accepted as given, for matching, as long as it seems reasonable for the resource
since the Source for this element is or includes '[OSoI]': it is ok if the data is 'supplied' (i.e., in square brackets or as a note), but only if it seems applicable; but it is not ok if the data is not 'supplied' (except for error)
but be sure to check the resource carefully, if the data for the element is Core, or if the data is important for differentiating the resource from a similar resource