I dont think this is a park and is named this, its best classified as open land (landuse=grass) as its a private parcel with a office building. On the Beale Street side is the Elvis Presley Plaza and on the MLK Ave side is the MLK Reflections Park...

POI should not be in the water here...

tree names should not be the species rather they should follow the proper tree tagging schema in osm: natural=tree

unable to verify poi here from latest imagery, suggest tagging as historical or removing if its not located here any more

pretty sure this "Stanford Lands" polygon is not called this, probably best named as Stanford Linear Accelerator Center National Accelerator Laboratory with operator tag as Stanford University as its owned by US DOE. Tag is also incorrect as its not a university in its own right its rather a amenity=research_center. Also the boundary for the polygon looks too big as it covers Jasper Ridge preserve and some private ranch/farm land, suggest updating boundary to match the actual property line, useful map to help may be here: https://vue.slac.stanford.edu/slac-visitor-map