The first opinion would be..."We have come to dedicate a portion of that field.."..."It is altogether fitting and proper that we should do this..."This opinion has been substatiated before when Lincoln explains that the country is..." engaged in a war...".Besides, he starts his point of view with the words.." in a larger sense...".His second opinion originates as .."We cannot dedicate, we cannot consecrate..."This opinion is substantiated by the description he makes abot the men who were brave enough to struggle for the building of the nation which is now being affected by the war.We know it is an opinion since he justifies the need for something.It is what he, as a man, as an American deems right.
The last opinion is the one beginning .."The world will little note, nor long remember what we say here..."I think the support for this opinion is the fact that what is happening at the time, Lincoln considers as important for the ones who live in America.