has inside instant https://www.commoncoreontologies.org/TimeOntology For Temporal Interval t1 and Temporal Instant t2, t1 has inside instant t2 if and only if there exists Temporal Instants t3 and t4 that are part of t1 and non-identical with t2, such that t3 is before t2 and t4 is after t2. J. F. Allen and J. A. G. M. Koomen. Planning using a temporal world model. In Proceedings of the 8th International Joint Conference on Artificial Intelligence (IJCAI-1983) pages 741–747. Available at: https://www.ijcai.org/Proceedings/83-2/Papers/036.pdf is inside instant of one-dimensional temporal region zero-dimensional temporal region