nodes() before and after a string delimiter

I have the following element (I'm using Saxon9 and XSLT2)

<p>Crazing b Hairline cracking of the resin, giving it an opaque,
<q>frosty</q> appearance.</p>

I need to break it into two halves like the following based on the b (space
en dash space) and only the first  b (space en dash space).

<p>
   <term>Crazing</term>
   <definition>Hairline cracking of the resin, giving it an opaque,
<q>frosty</q> appearance.</definition>
</p>

Ibm used to breaking strings on delimiters and not worrying about any inline
elements, but his time the inline elements matter.
Is this a for-each-group solution? Break it into two for-each-groups and in
the first test for a following-sibling[. = 'b'] and the second test for the
following-sibling[. = 'b'].

No need to apply templates at this point a copy-of will suffice.

Any insight would be appreciated.

Thanks

Marijan (Mario) Madunic
Publishing Specialist
New Flyer Industries

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