user: Question:  how many ↓ function / genus → with escherichia being EspD
Columns: ['↓ Function / Genus →', 'Shigella', 'Salmonella', 'Yersinia', 'Escherichia']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Needle monomer', 'MxiH', 'PrgI', 'YscF', 'EscF']
SQL:

assistant: SELECT COUNT("↓ Function / Genus →") FROM "Table" WHERE "Escherichia" = 'EspD';