Preposition: of

• spacetime: Chris Hunter and I, have been investigating more complicated topologies, in which there are other possible singularities in the foliation of spacetime.

Adjective modifier

• previous: This shows signs of two previous foliations, neither of which bears any relation to the current sequence of pages.

Modifies a noun

• system: Foliation adjusted in March 1989 and July 1999; the present foliation system will not be present in microfilms made before those dates.