1. A computer program product, comprising: a computer readable storage medium having program instructions embodied therewith, the program instructions readable by a processing circuit to cause the processing circuit to perform a method of facilitating a meeting of a group of participants, the method comprising: generating a graph of words from speeches of the participants, as the words are received from the participants; partitioning the group of participants into a plurality of subgroups of participants; performing a graphical text analysis on the graph to identify a cognitive state for each participant and a cognitive state for each subgroup of participants; and informing at least one of the participants about the identified cognitive state of a participant or a subgroup of participants.