### Instruction:

Extract the cause and effect entities from the following sentence:
The current communication system lacks the capabilities inherent in modern, network-based communications and therefore limits more efficient dynamic resource management

### Assistant:

VARIABLE: more efficient dynamic resource management
CONDITION: limits
KEYWORD: and therefore
EFFECT_1: limits more efficient dynamic resource management
CAUSE_1: The current communication system lacks the capabilities inherent in modern, network-based communications

