Database schema:

CREATE TABLE atom (
	atom_id TEXT NOT NULL -- atom id, example: ['TR000_1', 'TR000_2'],
	molecule_id TEXT DEFAULT NULL -- molecule id, example: ['TR000', 'TR001'],
	element TEXT DEFAULT NULL -- example: ['c', 'cl'],
	PRIMARY KEY (atom_id), 
	CONSTRAINT fk_atom_molecule FOREIGN KEY(molecule_id) REFERENCES molecule (molecule_id)
)


CREATE TABLE bond (
	bond_id TEXT NOT NULL -- example: ['TR000_2_3', 'TR000_1_2'],
	molecule_id TEXT DEFAULT NULL -- example: ['TR000', 'TR001'],
	bond_type TEXT DEFAULT NULL -- example: ['=', '-'],
	PRIMARY KEY (bond_id), 
	CONSTRAINT fk_bond_molecule FOREIGN KEY(molecule_id) REFERENCES molecule (molecule_id)
)


CREATE TABLE connected (
	atom_id TEXT NOT NULL -- atom id, example: ['TR000_1', 'TR000_2'],
	atom_id2 TEXT NOT NULL -- atom id 2, example: ['TR000_1', 'TR000_2'],
	bond_id TEXT DEFAULT NULL -- bond id, example: ['TR000_2_3', 'TR000_1_2'],
	PRIMARY KEY (atom_id, atom_id2), 
	CONSTRAINT fk_connected_bond FOREIGN KEY(bond_id) REFERENCES bond (bond_id),
	CONSTRAINT fk_connected_atom FOREIGN KEY(atom_id2) REFERENCES atom (atom_id),
	CONSTRAINT fk_connected_atom FOREIGN KEY(atom_id) REFERENCES atom (atom_id)
)


CREATE TABLE molecule (
	molecule_id TEXT NOT NULL -- molecule id, example: ['TR000', 'TR001'],
	label TEXT DEFAULT NULL -- example: ['+', '-'],
	PRIMARY KEY (molecule_id)
)

Question: Name chemical elements that form a bond TR001_10_11.
Evidence: element = 'cl' means Chlorine; element = 'c' means Carbon; element = 'h' means Hydrogen; element = 'o' means Oxygen, element = 's' means Sulfur; element = 'n' means Nitrogen, element = 'p' means Phosphorus, element = 'na' means Sodium, element = 'br' means Bromine, element = 'f' means Fluorine; element = 'i' means Iodine; element = 'sn' means Tin; element = 'pb' means Lead; element = 'te' means Tellurium; element = 'ca' means Calcium; TR001_10_11 is the bond id; molecule id refers to SUBSTR(bond_id, 1, 5); atom 1 refers to SUBSTR(bond_id, 7, 2); atom 2 refers to SUBSTR(bond_id, 10, 2)

SQL:
SELECT T1.element FROM atom AS T1 INNER JOIN connected AS T2 ON T1.atom_id = T2.atom_id INNER JOIN bond AS T3 ON T2.bond_id = T3.bond_id WHERE T3.bond_id = 'TR001_10_11'