How to collect appropriate data from group.txt file?

Attached file include data as below:
I would liket to get data group name and node and element information
Also, some groups have lots of information and "" // @" means end of iline.
Some data is contained in Next line.
For example, group "DeckHouse01" has node 247 248 249 250 257 258 259 260 and element 289 292 302 303 304 305.
So I want to arrange as following : Please provide effective way of code in matlab

Group Name   Node                              Element 
DeckHouse01  247 248 249 250 257 258 259 260  289 292 302 303 304 305
DeckHouse02  257 258 259 260 267 268 269 270  292 306 316 317 318 319
.
.
.


$# Session file groups.ses.01 started recording at 25-Mar-20 13:13:46
$# Build: 24.0.554811 Fri Mar 16 21:12:59 PDT 2018
$# Recorded by: Patran 2018
sys_poll_option( 2 )
ga_group_create( "DeckHouse01" )
ga_group_entity_add( "DeckHouse01", " Node 247:250 257:260 Element 289 292" // @
" 302:305" )
ga_group_create( "DeckHouse02" )
ga_group_entity_add( "DeckHouse02", " Node 257:260 267:270 Element 292 306" // @
" 316:319" )
ga_group_create( "DeckHouse03" )
ga_group_entity_add( "DeckHouse03", " Node 267:270 277:280 Element 306 320" // @
" 330:333" )
ga_group_create( "DeckHouse04" )
ga_group_entity_add( "DeckHouse04", " Node 277:280 287:290 Element 320 334" // @
" 344:347" )
ga_group_create( "DeckHouse05" )
ga_group_entity_add( "DeckHouse05", " Node 287:290 297:300 Element 334 348" // @
" 358:361" )
ga_group_create( "DeckHouse06" )
ga_group_entity_add( "DeckHouse06", " Node 241:246 248:249 251:256 258:259" // @
" Element 291 294 297:301 304" )
ga_group_create( "DeckHouse07" )
ga_group_entity_add( "DeckHouse07", " Node 251:256 258:259 261:266 268:269" // @
" Element 294 308 311:315 318" )
ga_group_create( "DeckHouse08" )
ga_group_entity_add( "DeckHouse08", " Node 261:266 268:269 271:276 278:279" // @
" Element 308 322 325:329 332" )
ga_group_create( "DeckHouse09" )
ga_group_entity_add( "DeckHouse09", " Node 271:276 278:279 281:286 288:289" // @
" Element 322 336 339:343 346" )
ga_group_create( "DeckHouse10" )
ga_group_entity_add( "DeckHouse10", " Node 281:286 288:289 291:296 298:299" // @
" Element 336 350 353:357 360" )