http://franz.com/ns/allegrograph/3.0/temporal/intervalMeets
Example:
  ?x t:intervalMeets ?y    Matches interval  ?x  and interval  ?y  such that  ?x  meets  ?y  on the timeline. 
  ?x  and  ?y  can be defined as intervals using either times or points (though they must both be defined using the same mechanism). 
 I.e., Either  ?x  has  t:endtime   ?endTime  and  ?y  has  t:starttime   ?startTime  and  ?endTime  is the same as  ?startTime  on the timeline  or   ?x  has  t:endpoint   ?endPoint  and  ?y  has  t:startpoint   ?startPoint  and  ?endPoint  is simultaneous with  ?startPoint . 
Notes
The following namespace abbreviations are used:
- fti - <http://franz.com/ns/allegrograph/2.2/textindex/>
 - geo - <http://franz.com/ns/allegrograph/3.0/geospatial/>
 - geofn - <http://franz.com/ns/allegrograph/3.0/geospatial/fn/>
 - nd - <http://franz.com/ns/allegrograph/5.0/geo/nd#>
 - ndfn - <http://franz.com/ns/allegrograph/5.0/geo/nd/fn#>
 - sna - <http://franz.com/ns/allegrograph/4.11/sna/>
 
The SPARQL magic properties reference has additional information on using AllegroGraph magic properties and functions.