1. As a question:
* "Who can be called?" - This is a question asking for a list of people or things that can be called upon. It's a broad question, needing more context. For example:
* "Who can be called for emergency medical assistance?" (asking for a list of potential responders)
* "Who can be called to fix this leaky faucet?" (asking for a list of potential plumbers)
2. As a statement:
* "Who can be called?" - This could be a statement expressing confusion or disbelief. For example:
* "Who can be called to stop this disaster? This is beyond our control!" (expressing frustration and a lack of solutions)
3. As a part of a larger phrase:
* "Who can be called to account for their actions?" - This implies questioning someone's responsibility for something.
* "Who can be called upon to help in this crisis?" - This asks for volunteers or those capable of assisting.
To understand the exact meaning, please provide more context about the situation where you heard or read this phrase.