Conversation so far:
How did Lala Lajpat Rai die?
James A. Scott ordered police to baton charge protesters and personally assaulted Rai. Rai did not fully recover from his injuries and died of a heart attack
When did Lala Lajpat Rai die?
Lala Lajpat Rai died on 17 November 1928.

Question: What was Lala's relationship to Singh?
Self-contained rewrite: What was Lala Lajpat Rai's relationship to Bhagat Singh?