It turns out it is trivial to have multiple events at the same instance in time. To create a, b and c at the same time:
(a &| b &| c).
(a &| b &| c).
Input: (a &| b). Priority=1.000000 Truth: frequency=1.000000, confidence=0.900000
Revised: (a &| b). Priority=1.000000 Truth: frequency=1.000000, confidence=0.947368
Revised: a. Priority=0.905000 Truth: frequency=1.000000, confidence=0.895028
Derived: a. Priority=0.905000 Truth: frequency=1.000000, confidence=0.810000
Revised: b. Priority=0.905000 Truth: frequency=1.000000, confidence=0.895028
Derived: b. Priority=0.905000 Truth: frequency=1.000000, confidence=0.810000
Revised: (b &| a). Priority=0.452500 Truth: frequency=1.000000, confidence=0.895028
Derived: (b &| a). Priority=0.452500 Truth: frequency=1.000000, confidence=0.810000
a?
Input: a?
Answer: a. creationTime=3 Truth: frequency=1.000000, confidence=0.895028