The students do not understand the words, the seminar does not recognize the process each group up presents no clear information reference sources. Some groups could not be trusted to think up your own data.
Students do not understand the term conference Unknown process Each group was offered no explicit reference data. Can not be trusted Some groups think up their own data.
The student did not understand the seminar unknown procedure worked. Each group presents no more reference data clearly cannot be trusted, some group thinks up.