A composition comprising a polymerizable compound of the following formula (I) A is a group of the following formula (II) wherein X1 is CO or CS； X2 is a single bond, CO, CS, CH2, or a group Z[X'Z']k, wherein X' is an oxygen atom, a sulfur atom or NR, (wherein R is a hydrogen atom, a straight chain or branched C1-16 alkyl group which may be substituted by a C3-6 cycloalkyl group, a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -0-PO3M2 or -SO3M, a C3-6 cycloalkyl group which may be substituted by a C1-16 alkyl group, a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -0-PO3M2 or -SO3M, a C6-14 aryl or C3-14 heteroaryl group which may be substituted by -COOM, -PO3M, -O-PO3M2 or -SO3M), Z is a straight chain or branched C1-4 alkylene group, Z' is a bond, a straight chain or branched C1-4 alkylene group, and k is an integer of from 1 to 50； is a monocylic, bicyclic or tricyclic cycloalkyl group having 3 to 20 carbon atoms or a monocylic, bicyclic or tricyclic heterocycloalkyi group having 2 to 20 carbon atoms and 1 to 4 heteroatoms selected from oxygen, sulfur and nitrogen atoms, which groups may be substituted with 1 to 3 groups selected from a C1-16 alkyl group, - COOM, -PO3M, -O-PO3M2 or -SO3M； R1 is a hydrogen atom, -COOM, a straight chain or branched C1-16 alkyl group which may be substituted by a C3-6 cycloalkyl group, a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -O-PO3M2 or -SO3M, a C3-6 cycloalkyl group which may be substituted by a C1-16 alkyl group, a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -O-PO3M2 or -SO3M, a C6-14 aryl or C3-14 heteroaryl group which may be substituted by -COOM, -PO3M, - O-PO3M2 or -SO3M, R2 is a hydrogen atom, -COOM, a straight chain or branched C1-16 alkyl group which may be substituted by a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -O-PO3M2 and -SO3M, a C3-6 cycloalkyl group which may be substituted by a C1-16 alkyl group, a C6-14 aryl or C3-14 heteroaryl group, -COOM, -PO3M, -O-PO3M2 or -SO3M, or
