Adpositions

To be explicitly represented by attributes, except when their semantic value may be inferred from the corresponding relation.

the book is under the box = plc(book, box.@under)
the book is in the box = plc(book, box.@in) or plc(book, box)

Preposition attributes

@aboard @about @above @according_to @across @after @against @ahead_of @along @alongside @amid @among @apart_from @around @as @as_far_as @as_of @as_per @as_regards @as_well_as @aside @aside_from @astride @at @athwart @atop @barring @because_of @before @behind @below @beneath @beside @besides @between @beyond @but @by @by_means_of @circa @close_to @concerning @despite @down @due_to @during @except @except_for @excluding @failing @far_from @following @for @from @given @in @in_accordance_with @in_addition_to @in_case_of @in_front_of @in_place_of @in_spite_of @including @inside @inside_of @instead_of @into @like @mid @minus @near @near_to @next @next_to @notwithstanding @of @off @on @on_account_of @on_behalf_of @on_top_of @onto @opposite @out @out_from @out_of @outside @outside_of @over @owing_to @pace @past @per @plus @plus @prior_to @pursuant_to @qua @regarding @regardless_of @round @save @since @subsequent_to @than @thanks_to @that_of @through @throughout @to @toward @towards @under @underneath @unlike @until @up @upon @versus @via @with @with_regard_to @with_respect_to @within @without @worth