Corporate participation involves an annual unrestricted gift of $2,500 or more for Chancellors Circle or of $1,000 or more for Chancellors Associates.
( ( Corporate participation ) ( ( ( involves ( ( an ( annual ( unrestricted gift ) ) ) ( of ( ( ( $ 2,500 ) or ) more ) ) ) ) ( ( ( for ( Chancellors Circle ) ) or ) ( of ( ( ( ( $ 1,000 ) or ) more ) ( for ( Chancellors Associates ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Corporate) (NN participation)) (VP (VBZ involves) (NP (NP (DT an) (JJ annual) (JJ unrestricted) (NN gift)) (PP (IN of) (NP (QP ($ $) (CD 2,500) (CC or) (JJR more))))) (PP (PP (IN for) (NP (NNP Chancellors) (NNP Circle))) (CC or) (PP (IN of) (NP (NP (QP ($ $) (CD 1,000) (CC or) (JJR more))) (PP (IN for) (NP (NNP Chancellors) (NNPS Associates))))))) (. .)))
Minimum corporate donations start at just $1. 
( ( Minimum ( corporate donations ) ) ( ( start ( at ( just ( $ 1 ) ) ) ) . ) )
(ROOT (S (NP (NNP Minimum) (JJ corporate) (NNS donations)) (VP (VBP start) (PP (IN at) (NP (QP (RB just) ($ $) (CD 1))))) (. .)))