Complex sentence: Later, the cast and crew moved to Portland, Maine, to scenes which occur at an ice skating rink, but unseasonably warm weather turned the ice to water and forced the production to rent snow-making machines.
Split into simpler sentences: Later, the cast and crew moved to Portland, Maine, to scenes which occur at an ice skating rink. But unseasonably warm weather turned the ice to water and forced the production to rent snow-making machines.