The returned document will always contain as many rows as the input file.
When no match is found for an input source, an empty row is returned. Empty lines are ignored. However, if the input source is
illegal (i.e. RA not between [0;360], DEC not between [-90;90] or an object name can not be resolved by Simbad),
an error will be returned and no query will be performed.
The first column will always contain the input row and the second one will give the
angular distance (in degrees) between the input target and the matched source in the Gaia catalogue.
All the other columns are coming from the Gaia catalogue.