highlight search query full result in whoosh

Question

I have a query

   t1 = query.Term("content", "field")
   t2 = query.Term("content", "information")
   t3 = query.Term("content", "document")
   q = spans.SpanNear2([t1, t2, t3], slop=5, ordered=True)

finds and marks individual words.

[information] A [field] is a piece [document] create [document] of [information] for each [document] in the index,...

but I need to mark whole correct expression. (?)

information A [field is a piece document create document of information for each document] in the index,...