Contributed by Rosetta Marantz Cohen / “Anima,” the first New York show of Ranti Bam’s work, now on view at James Cohan, presents the British-Nigerian artist’s 15 mostly freestanding ceramic sculptures. They’re strategically deployed across two rooms, simulating a conversation among a lively group of women who are different in color and temperament but linked in some fundamental way. The longer you look at them, the more animated and female they seem.