Table:
N. Viswanathan

Born

Viswanathan

1929

Vellore, Madras Presidency, India

Died	17 November 2010 (aged 80–81)

Kolkata, West Bengal, India

Years active	1963–2010
Spouse	Paramita
Children	Ashoke Viswanathan

This image shows a table. Determine whether this table contains merged cells and output merged cell areas with the JSON format of {'top-left':(x, y), 'bottom-right':(z, w)}, where x, y, z and w represent the indices of the first row, the first column, the last row, and the last column in the merged region. Row and column indices are numberd from 1.

The merged cell area is: {'top-left':(1, 1), 'bottom-right':(1, 4)}.