existence_starts_during
x existence starts during y if and only if the time point at which x starts is after or equivalent to the time point at which y starts and before or equivalent to the time point at which y ends. Formally: x existence starts during y iff α(x) >= α(y) & α(x) <= ω(y).
RO:0002490
existence_overlaps
is_a
RO:0002496
existence_starts_during_or_after
is_a