| p(a, c), p(c, c0), rtc(m0, c0, b), p(c, c0) ∧ rtc(m0, c0, b) → (∃ c0. rtc(m0, c, c0) ∧ p(c0, b)) ⊦ ∃ c1. (∃ c. p(a, c) ∧ rtc(m0, c, c1)) ∧ p(c1, b) |
p(a, c), p(c, c0), rtc(m0, c0, b), rtc(m0, c, c1), p(c1, b) ⊦ ∃ c1. (∃ c. p(a, c) ∧ rtc(m0, c, c1)) ∧ p(c1, b)